AI Services in Japanese Supported

# 業務効率化# 自動化・省力化# コスト削減# 日本語対応

フリー

freee

freee (freee accounting) is an integrated cloud accounting platform and the No.1 cloud accounting software by domestic market share in Japan (provided by freee K.K., listed on the Tokyo Stock Exchange Growth Market). Because it automatically imports transaction data from bank accounts and credit cards and AI infers the journal entries, even people without bookkeeping knowledge can handle everything from bookkeeping through tax filing, closing, and electronic filing in one seamless flow. Plans start from 980 yen per month for sole proprietors and from 5,480 yen for corporations (both with annual billing, excluding tax), with no initial fee and a free trial available. It can also be used as an integrated cloud ERP that links with HR and labor, invoicing, and more.

ウォーブンドットアイオー

WOVN.io

A cloud localization service that lets you localize an existing website or app into up to 45 languages by adding just one line of script, with almost no changes to the source code. It combines generative-AI, machine, and professional translation and manages everything from translation to multilingual SEO in one place. Provided by Wovn Technologies, with more than 18,000 sites deployed.

# 業務効率化# 自動化・省力化# 要約・翻訳# 日本語対応

マネーフォワードクラウド

MoneyForwardクラウド

Money Forward Cloud is a unified back-office SaaS suite for companies and sole proprietors, provided by Money Forward, Inc., which is listed on the Tokyo Stock Exchange Prime Market. With cloud accounting at its core, it links invoicing, expenses, payroll, attendance, and HR/labor management under a single ID, and streamlines everything from bookkeeping to financial closing and tax filing through automatic transaction retrieval and automated journal entries. Corporate accounting starts at 2,480 yen per month and individual tax return plans start at 900 yen per month (both with annual billing, excluding tax), with no initial cost and a one-month free trial. It also has particular strength in integration with accounting firms.

# 業務効率化# 自動化・省力化# コスト削減# 生産性向上# 日本語対応

スマートエイチアール

SmartHR

An integrated HR platform from SmartHR, Inc. covering everything from labor/HR administration to talent management. It digitizes onboarding and year-end tax adjustment to build an employee database, and on that foundation extends into performance reviews, placement, employee surveys and skills management. Attendance is offered as a native feature. No.1 labor-management cloud share for 7 years, 80,000+ registered companies, ARR over ¥30B.

# バーチャルヒューマン# 顔認証・画像解析# 音声生成# 日本語対応

エークール

AKOOL

AKOOL, from AKOOL Inc. (US), is a business-focused generative-AI video platform that brings AI avatars, video translation, and face swap together. Led by real-time interactive streaming avatars, it handles 155+-language lip-synced video translation, face swapping, and voice synthesis across one platform. Japanese UI is supported. Pricing is credit-based: Free / Starter $12 / Pro $30 / Pro Max $59 / Business $249 (commercial use requires Business or above).

スピークバディー

An app from appArray, Inc. focused on practicing English conversation with an AI character. Role-play across 1,000+ scenes with an "AI buddy," plus a generative-AI-powered Free Talk feature. It lets you practice speaking anytime and anywhere; 5M+ downloads, App Store 4.6. Offers personalized curricula and a business version, "SpeakBuddy for Business."

# AIチャットボット# 自己啓発・コーチング# 日本語対応

オマカセエーアイ

Omakase AI

A no-code, e-commerce-focused platform that turns your website into a voice-and-chat AI sales agent just by entering your site URL. It reads your site to build a knowledge base and, once embedded and integrated with Shopify, talks with shoppers, recommends products, and adds items to cart in conversation. Pricing from Intern $49 / Associate $149 / Principal $399 per month. Built by Zeals Co., Ltd.

# AIチャットボット# ボイスボット# ノーコード自動化# 日本語対応

ブリュー

Vrew

An all-in-one AI video editor (by VoyagerX) that auto-transcribes speech so you edit video like a text editor. Beyond auto-captions and silence cutting, it bundles text-to-video, AI voice, and AI images. Free tier available; paid is credit-based from ¥1,590/mo.

# 字幕生成# 音声認識・音声合成# 日本語対応

イルシル

Irusiru, from Irusiru Inc., is an AI slide generator specialized for Japanese business documents. From 3,000+ Japanese templates, enter text and the AI auto-generates the structure and slides. It supports PDF/PPTX export, a PowerPoint plugin, and auto chart generation, and cuts document-creation time by about 70% (official), with 300,000+ cumulative users. Pricing: Free / Personal ¥1,848/mo (incl. tax) / Personal Plus / Business.

# プレゼン・スライド生成# デザイン生成# 日本語対応

ツムギ

tsumugi

tsumugi Inc.'s Japanese-focused SEO/AIO article generation AI that automates research through article generation and CMS posting from just a theme. It researches across the web, YouTube and news, writes articles mindful of SEO and generative-AI search (AIO/LLMO), and auto-posts to note and WordPress (in under 10 minutes, per the company). It uses Claude Sonnet 4.5, with monthly credit-based pricing (Lite from ¥9,800).

# テキスト生成# SEO# 自動化・省力化# マーケティング# 日本語対応

ピープルエックスエーアイめんせつ

PeopleX AI面接（旧People XRecruit）

PeopleX Inc.'s conversational AI interview service featuring a digital human. Renamed from "People XRecruit" in June 2025. Available 24/7, it removes scheduling overhead and automates first-round interviews — including follow-up questions, evaluation reports, and transcription. It is the recruitment module of the PeopleX AgenticHR platform (hiring to development to evaluation); the old domain xrecruit.jp has migrated to peoplex.jp.

# バーチャルヒューマン# 自動化・省力化# 日本語対応

ジャムロール

JamRoll

JamRoll is now offered as "Knowledge Work AI Sales Records." An AI meeting-record tool that records in-person, online, and phone sales conversations and automates transcription, summarisation, and CRM/SFA data entry. Poetics, the developer, transferred all its shares to Knowledge Work in May 2025, and the technology now lives on in this successor product. List price is 5,000 yen per user per month. Adopted at scale by large enterprises such as NEC and Ricoh Japan.

# 議事録作成# 音声合成・文字起こし# 感情解析・表情分析# 自動化・省力化# セールス# 日本語対応

ラスクエーアイ

Rask AI

An AI localization platform that automatically translates and dubs videos and audio into 130+ languages. With natural AI voices, voice cloning (32 languages), multi-speaker detection, lip-sync, and subtitle editing, it takes existing videos global as-is.

# 要約・翻訳# 動画生成# 音声生成# 音声合成・文字起こし# 品質向上・クリエイティブ支援# 日本語対応

ノッタ

Notta

Notta is an AI transcription and meeting-notes service that is strong in Japanese. It transcribes meetings and interviews in real time and automates speaker identification and AI summarization. It supports integration with Zoom/Teams/Google Meet/Webex and file imports, and is said to achieve a recognition rate of 98.86% or higher in formal meetings. Data is stored domestically with SOC 2 and ISO 27001 certifications, and Notta Brain can generate materials using AI credits. Pricing is Free ¥0 / Premium ¥1,185 / Business ¥2,508 (annual, tax-included monthly) / Enterprise by consultation.

# 議事録作成# 音声合成・文字起こし# 自動化・省力化# セールス# 日本語対応

ドキュメントフォース

Document Force

A business-automation AI service for companies that reads needed information from documents arriving as PDF, image, email, or fax, and automates matching, judgment, transcription, and output as one workflow. Beyond AI-OCR, it automates the steps after reading. No-code Japanese business instructions, API integration, ISO 27001 compliant. Pricing by quote with free validation.

# ノーコード自動化# AI-OCR（文字認識）# データ連携（API連携）# 不動産# 建設・製造# 自動化・省力化# 日本語対応

リーガルスケープ

Legalscape

A legal research service that searches across 4,500+ legal books, court precedents, statutes, and guidelines, with AI summarizing key points while stating the underlying sources. Supports link navigation to originals and reverse lookup of works citing them. Adopted by all five of Japan’s largest law firms. Free trial available; pricing on request.

# 業務効率化# 自動化・省力化# 日本語対応

リーガルブレイン

Legal Brain

A legal-specialized AI agent from Bengo4.com for attorneys and corporate legal departments. Ask in natural language and it searches across statutes, court precedents, specialist books, and guidelines via its proprietary LegalGraph database, returning organized legal issues with links to the underlying sources.

# 業務効率化# 自動化・省力化# 日本語対応

デュオリンゴ

Duolingo

The world's most-used language-learning app, learning 40+ languages gamified (500M+ learners). From Japanese you can study EN/KO/ZH/FR/ES/DE/IT/PT plus math, music, and chess. The higher Duolingo Max tier adds AI conversation practice (Roleplay, Video Call, Explain My Answer).

# AIチャットボット# 自己啓発・コーチング# 日本語対応

ナノバナナ

Nano Banana

The nickname for Google (DeepMind)'s Gemini image generation & editing model. Nano Banana = Gemini 2.5 Flash Image; Nano Banana Pro = Gemini 3 Pro Image, strong at character-consistent conversational editing, multi-image fusion, and in-image text. Available via the Gemini app, AI Studio, and the Gemini API, with a SynthID watermark on generated images.

# 画像生成# 自動化・省力化# 品質向上・クリエイティブ支援# 日本語対応

ライトスクライブ

LiteScribe

LiteScribe is an AI transcription and meeting-notes service that turns meetings, interviews, and video audio into text and automatically generates AI summaries, topic tags, and action items. No recording bot joins the call: the app captures your computer's system audio directly on your own machine, so nothing shows up in the participant list and — since no meeting URL is needed — in-person conversations are recorded exactly the same way. The desktop builds (Windows, macOS, Linux) add an offline mode (Pro and Business plans) that runs both transcription and AI summarisation on your own computer. Transcription covers 100+ languages and the interface is available in 15 languages including Japanese, with speaker diarization, PDF/DOCX/SRT export, and an AI chat that answers with citations and timestamps. Pricing starts with a permanent free tier of 120 minutes a month with no credit card, and paid plans from US$7.95 per month billed annually. When offline mode is not used, cloud transcription is performed by AssemblyAI in the United States.

# 議事録作成# 音声合成・文字起こし# 音声認識・音声合成# 要約・翻訳# 字幕生成# 業務効率化# 生産性向上# 日本語対応

エーアイサーチマップ

AIsearchmap

AIsearchmap is a monitoring tool for AI search optimisation (GEO/LLMO) from CINC Inc., a company listed on the Tokyo Stock Exchange Growth Market. It periodically collects answers from ChatGPT, Gemini, Perplexity, Google AI Mode and Google AI Overviews, then ranks how often your brand and your competitors are mentioned (Share of Voice) and which sites are used as citation sources. Two things set it apart: the answer list shows every response in full and can be filtered by whether your own brand appeared, and the prompt generator writes the measurement prompts from nothing more than your company name and domain. Pricing runs from a free plan that still includes every feature (ChatGPT only, 25 prompts, 20 competitors) to an enterprise plan covering all five models, quoted individually from ¥50,000 per month with invoicing. Companies only.

# LLMO・GEO（生成AI検索最適化）# SEO# マーケティング# 生成AI（LLM）# 業務効率化# 日本語対応

オトリオ

Otolio

An AI agent that proactively automates all meeting-related work — before, during, and after meetings. Rebranded from the AI minutes service "Smart Shoki," it goes beyond recording, transcription, and minutes to take over pre-meeting company research and post-meeting CRM updates and follow-up emails. Offered by Epicbase, with a "minutes agent" and a "sales agent." ISO/IEC 27001 certified; data is stored domestically and not used for machine learning without permission.

# 議事録作成# AIエージェント# 音声認識・音声合成# 音声合成・文字起こし# セールス# 業務効率化# 日本語対応

ワンオブテン

1of10

An AI-powered YouTube research and ideation tool that finds 'outlier' videos (which greatly outperform a channel's or niche's average) and, based on them, generates winning ideas, titles, and thumbnails. Combining thumbnail generation trained on real YouTube data with outlier analysis, it handles click-worthy creative and CTR analysis in one place. Japanese UI supported.

# デザイン生成# マーケティング# 日本語対応

カサナレ

Kasanare

An enterprise 'work-completion AI platform' that integrates company-specific knowledge understanding (beyond RAG), usage governance, and action control over existing business systems (including legacy) to complete actual work — not just generate answers. With adoption at Mitsubishi UFJ Trust and Banking and others. By Kasanare Inc.

# AIエージェント# AIチャットボット# 検索エンジン・RAG# 業務効率化# 自動化・省力化# 日本語対応

エーアイショーツ

AI Shorts

A Japanese video-generation service that turns documents (PDF, PowerPoint, images) into narrated videos — just upload, and AI auto-generates the script and adds narration. It supports AI voices in 15+ languages, making training, manuals, and product explanations into multilingual video quickly. By AGENTEC Co., Ltd.

# 動画生成# 音声合成・文字起こし# 字幕生成# 要約・翻訳# 業務効率化# 日本語対応

クウェン

Qwen

A family of large language models from China's Alibaba (Qwen / Tongyi Qianwen) and its conversational AI, Qwen Chat (Qwen Studio). The current flagship is Qwen3.8-Max. Multimodal across text, image, and video, it offers chat, image and video generation, web search, and code generation for free. Many models are open source; Japanese is supported.

# 生成AI（LLM）# AIチャットボット# テキスト生成# 画像生成# コード生成# 日本語対応

ミストラル

Mistral

The conversational AI assistant 'Vibe' (formerly Le Chat) from France's Mistral AI. Beyond writing, summarizing, translating, and coding, one environment offers web search, image generation, PDF/document analysis, Deep Research, voice input, memory, and a coding agent. Mistral AI develops open-weight and commercial LLMs. Supports Japanese input/output.

# 生成AI（LLM）# AIチャットボット# テキスト生成# 要約・翻訳# AIエージェント# 日本語対応

フォトルーム

Photoroom

An AI photo editor and product-visual studio that removes/replaces backgrounds and creates studio-quality product photos in seconds. It offers AI backgrounds, AI shadows, virtual models, batch editing of thousands of images, resizing, templates, and an API — suited to e-commerce sellers. Supports Shopify integration and iOS/Android apps.

# 画像生成# デザイン生成# 小売・EC# 日本語対応

フリーピック

Freepik

[Renamed to "Magnific" on April 28, 2026] The Freepik name has been retired and the service is provided as Magnific. freepik.com redirects to magnific.com, and accounts, subscriptions, and saved assets carry over unchanged. This page explains the rename and where to look now.

# 画像生成# 動画生成# デザイン生成# 日本語対応

カーソル

Cursor

Cursor is an AI coding agent (AI code editor) from Anysphere. A VS Code-based desktop app (macOS / Windows / Linux), it takes natural-language instructions and has an agent that understands your codebase handle planning, implementation, and fixes. You can choose its in-house Composer model, Grok, or frontier models from various providers, and it supports running multiple tasks in parallel, cloud agents, agentic code review by Bugbot, MCP, skills, and hooks, and privacy mode. A Cursor CLI and iOS app are also available. Pricing includes Hobby free, Pro $20, Pro+ $60, Ultra $200, and Teams $40 (per user, per month), among others.

# コード生成# AIモデル構築・管理# AIエージェント# 業務効率化# 日本語対応

コエフォント

CoeFont

A text-to-speech and voice synthesis service with a library of over 10,000 AI voices. You can register your own voice from about 50 recorded sentences, and it also offers a voice changer and enterprise real-time AI interpretation.

# 音声生成# 音声認識・音声合成# エンタメ／ゲーム・遊び# 日本語対応

セールスマーカー

Sales Marker

Sales Marker is a BtoB sales platform that identifies "the companies looking for you right now" using intent data and supports the entire path to winning deals with autonomous AI. As Japan's first Sales Signal®, it notifies you in real time of companies that searched your set keywords. Based on roughly 5 billion records/day of intent data and information on roughly 8 million key persons, it reaches out across multiple channels such as forms, calls, email, ads, and DMs, and with AI Meeting it handles deal analysis, scoring, and Next Action generation. Adopted by more than 600 companies; pricing is available on request (a free demo is offered).

# AIチャットボット# AIエージェント# 自動返信・メール作成# 通知・タスク連携# 業務効率化# マーケティング# セールス# 日本語対応

リーガルフォース

LegalForce

LegalOn Technologies’ AI contract-review platform. The AI automatically detects risks and missing clauses in pre-signing contracts and presents revision examples, sample clauses, and 2,000+ templates. Attorney-supervised and advertising the No.1 number of adopters, it is now evolving into the integrated legal platform "LegalOn."

# AI-OCR（文字認識）# 業務効率化# 自動化・省力化# 日本語対応

サトリ

SATORI

A Japanese marketing automation (MA) tool whose hallmark is "Unknown Marketing"—the ability to reach even anonymous prospects. Just embed a tracking tag to support acquiring, nurturing, and managing prospects. Provided by SATORI Inc., with 1,500+ companies adopting it and chosen even by companies new to MA thanks to its thorough support.

# 業務効率化# 自動化・省力化# マーケティング# 検索・レコメンド# 日本語対応

ジョブカン

A cloud back-office ERP from DONUTS Co., Ltd. With attendance management at its core, its 9 interconnected services — payroll, HR/labor, workflow, expenses, recruiting, accounting, quotes/invoices, and BPO — let you adopt only the tasks you need, gradually. Over 300,000 companies use the series, and it offers features such as AI-OCR for expenses.

# 業務効率化# 自動化・省力化# コスト削減# データ連携（API連携）# AI-OCR（文字認識）# 日本語対応

インフォマート

The "BtoB Platform" series from Infomart Corporation (TSE Prime) that digitizes business-to-business (BtoB) transactions. Invoices, ordering, contracts and quotations can all be completed on screen; the core Invoice product has 1.2M+ companies and the No.1 share in Japan. Trading partners join for free, and it supports the Invoice System and the Electronic Books Preservation Act. AI-OCR and similar features assist automation.

イージーピージーエーアイ

Easy-Peasy.AI

An all-in-one AI platform that lets you use 40+ AI models (Claude/GPT/Gemini, etc.) for text, images, video, audio, and AI agents under a single subscription. With 300+ templates and brand voice, it covers a wide range of content creation in one place.

# テキスト生成# 画像生成# 音声生成# 要約・翻訳# 日本語対応

イレブンラボ

ElevenLabs

An AI audio platform centered on high-quality AI voice generation and voice cloning in 70+ languages, extending to dubbing, speech-to-text (Scribe), sound effects, music, and conversational AI agents. Models include Eleven v3. Free tier / paid from $6/mo.

# 音声生成# 音声認識・音声合成# 日本語対応

エーアイブログクン

AIブログくん

A Japanese blog-automation service that, just by setting your target search keywords, fully automates everything from keyword analysis to generating SEO articles with images, auto-posting to WordPress, and submitting them to Google for indexing. It runs hands-off after setup, with a 3-article free trial.

# テキスト生成# SEO# 日本語対応

カリス

Xaris

Xaris is a pro-oriented AI writing assistant that builds an article outline just by "talking" via voice input (developed by Studio Yurigraph; distributed in Japan by GMO Internet). Answer the AI's questions by voice and a draft foundation forms, with specialized modes for SEO articles, LPs, and proposals, plus material search and table creation. Pricing starts at STARTER ¥1,980/mo (excl. tax), with a free trial (20 requests, no credit card).

# テキスト生成# 要約・翻訳# 日本語対応

キャッチー

Catchy

Catchy is one of Japan's largest AI writing assistant tools, provided by DigitalRecipe Inc. Powered by ChatGPT, it lets you quickly generate writing that fits your purpose simply by choosing from 100+ purpose-specific tools for ad copy, articles, documents, emails, brainstorming, and more. It has surpassed 90,000 members and has been featured on NHK, Nippon TV, TBS, and other outlets. Pricing runs from Free ¥0 / Starter from ¥3,000/mo / Pro ¥9,800/mo (unlimited use) / Enterprise, and you can start free with no credit card registration required.

# コピーライティング# テキスト生成# マーケティング# 日本語対応

トランスコープ

Transcope

A Japan-made, SEO-focused AI writing tool powered by OpenAI's GPT (by Sharemaru Inc.). Bundles competitor analysis, keyword suggestions, rank checks, and internal-link suggestions, and can learn your company's info via CSV for internal documents. 17,000+ companies to date.

# SEO# テキスト生成# 日本語対応

オンルック

Onlook

A design-and-development tool that lets you edit web apps such as React with Figma-like visual controls and reflect those changes in the actual code in real time ("the Cursor for Designers"). It also offers AI features that generate/edit apps from prompts, and is provided as a hybrid of an open-source (Apache 2.0, free) version and a hosted version (closed beta). Supports Next.js, React and Tailwind; 26k+ GitHub stars.

# デザイン生成# ノーコード自動化# 日本語対応

ベイルズクラウド

BALES CLOUD

A sales-engagement tool for inside sales from SMARTCAMP Co., Ltd. An all-in-one that completes everything from lead management to calling (CTI integration), bulk email, sequence automation, AI email generation and activity analytics. It integrates with Salesforce, MiiTel and Zoom Phone, developed from the know-how of the BALES outsourcing business. Pricing is quote-based.

# AIエージェント# 検索・レコメンド# 日本語対応

チャットピーディーエフ

ChatPDF

ChatPDF, from Germany's ChatPDF GmbH, is an AI tool that lets you upload documents like PDFs, Word, and PowerPoint and then summarize, ask questions, and translate them conversationally, like ChatGPT. Answers cite the source page, and it supports cross-file chat across multiple documents. The free plan (2 documents/day) works without sign-up, and paid Plus makes documents and questions unlimited.

# 要約・翻訳# PDF・文書生成# 日本語対応

モニカ

Monica

Monica, from Butterfly Effect (maker of Manus), is an all-in-one AI assistant that lets you switch among multiple cutting-edge AI models on one subscription. It crosses the GPT-5, Claude 4, and Gemini 3 families plus image/video and coding models, covering chat, search, summarize, translate, and image/video generation, with an AI agent, Deep Research, a browser extension, desktop, and mobile. Pricing: Free / Pro / Max (formerly Unlimited) / Ultra (USD; accounts are for individual use).

オルガ

OLGA

A "legal OS" from GVA TECH that uses AI to automate everything from contract review to contract management and legal-matter management in one flow. Consolidated from the former "GVA" series and renamed OLGA in 2024. It comprises AI Contract Review, Contract Management, an AI Legal Assistant, and a legal Q&A data foundation, and also centrally manages inquiry intake from email, Slack and Teams, using generative AI (ChatGPT API).

# AI-OCR（文字認識）# 業務効率化# 自動化・省力化# 日本語対応

エーアイリード

ailead

A Japanese enterprise AI-agent platform (by ailead Inc.) that integrates and structures conversation data from sales meetings, interviews, and calls, and has AI agents autonomously evaluate, reflect to SFA/ATS, and create tasks. Zoom/Teams/Meet, ISO/IEC 27001, 500+ companies. Also covers recruiting.

# 議事録作成# AIエージェント# 音声認識・音声合成# セールス# 業務効率化# 日本語対応

ベースフォーティーフォー

Base44

A vibe-coding AI app platform that generates full Web apps — database and authentication included — from plain-language instructions. Wix acquired it for around $80M in 2025. The free plan needs no credit card (25 message credits/month, up to 5 apps); paid tiers run $20/$50/$100/$200 a month, 20% less on annual billing. Two-way GitHub sync lets you export the full source code.

# ノーコード自動化# コード生成# AIエージェント# 業務効率化# 日本語対応

マネーフォワードエーアイコワーク

マネーフォワード AI Cowork

An AI-agent service (announced by Money Forward, Inc.) that autonomously handles back-office work — accounting, HR/labor, legal, and more — on the 'Money Forward Cloud' platform, acting like an AI 'coworker.' Announced April 2026 with early sign-ups; general availability was slated for July 2026 but is not yet confirmed, and pricing is undisclosed.

# AIエージェント# 業務効率化# 自動化・省力化# 生産性向上# 日本語対応

エーアイツールボックス

AI Toolbox

A collection of free, browser-based AI and online tools for processing video, images, and audio. No upload is required—files are processed right in your browser, so it is privacy-conscious. From video splitting to a variety of image and audio tools, it is easy to use for creators, marketers, and web designers as well as general users. Japanese-language pages are supported.

# 動画生成# 画像生成# 音声生成# 業務効率化# 日本語対応

ボイスモッド

Voicemod

A voice changer and soundboard app that transforms your voice into another in real time. With 200+ voices, AI voices, and Voicelab (custom voices), it pipes your transformed voice straight into Discord, OBS, and in-game voice chat. Windows/Mac/mobile. Free plan available; Pro comes in monthly, annual, or lifetime options.

# 音声生成# 音声認識・音声合成# エンタメ／ゲーム・遊び# 日本語対応

ノーション

Notion

An all-in-one AI workspace that combines docs, wikis, projects, and databases with deeply integrated AI — including Q&A across your workspace and connected apps, AI meeting notes, autonomous agents, and autofill. Its AI uses models from Anthropic, OpenAI, and others.

# テキスト生成# 要約・翻訳# ノーコード自動化# 通知・タスク連携# 業務効率化# 日本語対応

ミリキャンバス

MiriCanvas

A browser-based graphic design tool from Korea's MIRIDIH (a "Korean Canva"). With 530,000+ templates and drag-and-drop, you can create presentations, social posts, video, posters, logos and print. Its AI features are branded "miricle" (AI presentation, AI image generation, background removal, etc.). Commercial use is allowed even on the free plan with no watermark; Japanese UI; 18M+ cumulative users.

# デザイン生成# 画像生成# プレゼン・スライド生成# テキスト生成# 日本語対応

トリポエーアイ

Tripo AI

An AI 3D platform that generates production-ready 3D assets (models, textures, rigs) from text, images, or sketches in seconds. Supports auto-rigging, up to 4K/8K PBR textures, and export to GLB/FBX/USDZ and more. Its flagship models are the high-fidelity Tripo H3.1 and the engine-ready lightweight Tripo P1.0.

# 画像生成# デザイン生成# エンタメ／ゲーム・遊び# 日本語対応

アラゴン・エーアイ

Aragon.ai

US-based Aragon AI's tool that generates professional-quality headshots (profile photos) from selfies. From six selfies the AI learns a model of you and generates dozens of photos with varied outfits, backgrounds, and lighting in as little as 15 minutes—no studio needed—for LinkedIn or ID photos. Over 40 million have been generated.

# 画像生成# デザイン生成# バーチャルヒューマン# エンタメ／ゲーム・遊び# 日本語対応

ヤヨイ

弥生

Go-to cloud accounting software for Japanese SMBs and sole proprietors (Yayoi Co.), with AI that auto-categorizes bank statements and receipts ('Smart Transaction Import'). The flagship Yayoi Accounting Next adds AI transaction entry and cash-flow analysis (beta), with tax filing, invoice, and e-bookkeeping compliance. Free trial / first-year-free options.

# 業務効率化# 自動化・省力化# コスト削減# 日本語対応

キングオブタイム

KING OF TIME

A cloud attendance management system from Human Technologies, Inc. It supports 15 clock-in methods — finger-vein, facial recognition, IC card, GPS, and more — and automatically aggregates and centralizes overtime, leave, shifts, and Article 36 (overtime) agreement alerts. An HR & payroll platform extending from attendance to HR/labor, data analysis, and payroll, it claims the No.1 used-ID share at 300 yen per user per month.

# 業務効率化# 自動化・省力化# AI-OCR（文字認識）# データ連携（API連携）# 日本語対応

ディーエックススイート

DX Suite

AI inside Inc.'s AI-OCR-centered AI platform. It claims the No.1 share in the OCR solution market for five straight years and digitizes handwritten and non-standard forms with high accuracy (avg. 99.6%) via its in-house PolySphere-4 engine. It now has AI agents built in to automate the whole flow — file capture, reading, checking, output and storage — and supports cloud and on-prem (AI inside Cube).

エーアイインサイド

AI inside

AI inside is a Japanese AI company that centers on the AI-OCR platform "DX Suite" while also building the RAG agent platform "Leapnet" and the AI edge computer "AI inside Cube." DX Suite is the No.1 market-share AI-OCR, converting every kind of business document—structured or unstructured—into data with industry-leading recognition accuracy, and using AI agents to automate the steps before and after data entry as a single workflow. It combines high-accuracy RAG with a Japanese-specialized LLM and supports on-premises, high-security deployments. Pricing is quote-based, tailored to the product and scale of use.

# 業務効率化# 自動化・省力化# AI-OCR（文字認識）# データ連携（API連携）# 日本語対応

ショドー

Shodo

Shodo, from ZenProducts Inc., is a cloud service that centers on Japanese-focused AI proofreading and brings writing, peer review, and task management together ("your AI editorial department"). It flags typos, mis-conversions, honorific errors, and inconsistent notation in real time, and offers Shodo Copilot sentence-ending completion, AI review, a browser extension, Docs/Word integration, and an API. Pricing: Basic free / Premium ¥1,000 / Max ¥5,000 / Business ¥2,000 per user (tax incl.).

# テキスト生成# 要約・翻訳# 日本語対応

デザインズエーアイ

Designs AI

An on-demand 'AI creative team' (Designs.ai by Pixlr): brief it once and specialist agents (Brand/Image/Video/Slides/Audio) plan, pick models, and generate. Brand consistency and smart model routing are core. Credit-based from ¥1,500 (Go).

# デザイン生成# 画像生成# 動画生成# 日本語対応

プロンプトラボ

Prompt Lab

[Appears to be discontinued] A Japan-made platform for designing and sharing prompts for generative AI, provided by Walkers, Inc. Its official domain (prompt-laboratory.com) no longer resolves via DNS and cannot be reached. This page summarizes available alternatives.

# テキスト生成# コード生成# 日本語対応

クリエイティブドライブ

Creative Drive

Creative Drive, from Chipper Inc., is an AI content-marketing service spanning AI SEO-article generation, reader analysis, lead nurturing, and turning prospects into deals (an "AI growth-hack agent"). It generates articles from keywords with GPT-4o and adds conversion-path analysis, AIO/LLMO analysis, scoring, and article-production outsourcing. Adopted by 6,300+ companies. Pricing starts at Standard ¥10,000/mo (excl. tax), with a free trial.

# マーケティング# 業務効率化# 日本語対応

ビデオエフエックス

VideoFX

Google's former text-to-video AI tool. It has now been merged into the successor AI filmmaking tool “Google Flow,” and the old URL redirects to Flow. Flow is built around the video model Veo (currently Veo 3.1, with native audio generation) and lets you build scenes and control the camera.

# 動画生成# 日本語対応

ミュージックエフエックス

MusicFX

MusicFX is a text-to-music AI tool from Google. It has since evolved into its successor, Google Flow Music (flowmusic.app), a music-creation platform where you can generate full vocal tracks with the latest music model Lyria 3.5, produce music videos with Veo, remix and split stems, and publish and share your songs, all in one place. It supports prompts in Japanese and other languages, is free to start, and grants daily credits, with no credit card required.

# 音楽生成# 音声生成# 日本語対応

ミエルカエンジン

見える化エンジン

A Voice-of-the-Customer (VOC) analysis and visualization platform from Plus Alpha Consulting (TSE Prime). It analyzes text data from inquiries, surveys, social media and audio with text mining and generative AI (e.g. AI-managed analysis reports). It has held the No.1 domestic share of the text-mining SaaS market for 14 straight years with 1,900+ deployments, and is used for marketing and product development.

# 感情解析・表情分析# マーケティング# 日本語対応

マジックイレイサー

Magic Eraser

Magic Eraser is a free AI image-editing tool from Magic Studio (aarzoo, Inc.) that removes unwanted objects, people, and photobombs by brushing over them and erasing in one click. It supports JPG, PNG, HEIC and more, needs no sign-up, and allows commercial use when you respect copyright. The paid Pro unlocks watermark-free, high-resolution downloads and bulk editing of up to 50 images.

# 画像生成# 日本語対応

コミックコパイロット

Comic-Copilot

An AI assistant that acts as a "consultation partner" for manga creation. Developed by alu Inc. drawing on the expertise of Shueisha's "Shonen Jump+" editorial team, it helps with coming up with themes and plots, fleshing out characters, adjusting and rephrasing dialogue, impressions and feedback, and even encouragement—all as a sounding board. It doesn't draw for you and is free to use (login with a Jump Rookie! / Manga no account required).

# テキスト生成# 画像生成# 日本語対応

ミキワメエーアイ

ミキワメ AI

Leading Mark, Inc.'s HR AI platform built around aptitude testing and employee surveys (renamed from "Mikiwame" to "Mikiwame AI" in 2026). It compares candidates against your own top performers and rates the match on a 14-level S–E scale, and predicts attrition risk per person via personality × condition. Generative AI helps generate interview questions and management advice. 6,000+ companies and 2M+ test-takers.

# 感情解析・表情分析# 日本語対応

クリエイティブエーアイ

Cre8tiveAI

[Discontinued Dec 26, 2025] Cre8tiveAI was an image/video editing AI platform bundling upscaling, illustration generation, style transfer, colorization, and photo-to-video, but it has shut down (by RADIUS5). A sister service, copainter, is suggested.

# 画像生成# 動画生成# 日本語対応

フェロ

Felo

Felo, from Japan's Sparticle Inc., is an AI search engine that aggregates key points from multiple sources and answers with citations. It has expanded beyond search into an "AI search + creation" platform with a research agent (Deep Research) and mind-map and slide (PPTX) generation. It is Japanese-first with 15+ languages. Pricing: Free (200 credits/day) / Felo Search Pro ¥2,099/mo (credit-based).

# 要約・翻訳# 検索・レコメンド# 日本語対応

ステーブルディフュージョン

Stable Diffusion

A family of open-weight image-generation AI models developed by Stability AI. The current flagship is Stable Diffusion 3.5 (Large / Large Turbo / Medium). You can download the weights for free and run them locally (GPU required), and it is also usable via the official API, DreamStudio, ComfyUI, and more. Under the Community License, commercial use is free for under $1M in annual revenue (prompts are mainly in English).

# 画像生成# 生成AI（LLM）# アイデア支援／創造ツール# 日本語対応

リンゴチャンプ

LingoChamp

An English-learning app from LAIX (Liulishuo) built around a proprietary speech-recognition and pronunciation-scoring AI. It scores the English you speak at the phoneme level and evaluates and corrects pronunciation, vocabulary, grammar and fluency across multiple dimensions. Widely used in China as "Liulishuo," but LAIX was delisted and taken private in the US in 2022, and the international version has shrunk to mainly English (+ Spanish) with stalled updates (availability from Japan and a Japanese UI need to be confirmed).

# AIチャットボット# 自己啓発・コーチング# 日本語対応

イメージエフエックス

ImageFX

Google's text-to-image tool, now integrated into "Google Flow" (an AI creative studio). Image generation runs on Nano Banana / Nano Banana Pro and video on Veo 3.1 / Gemini Omni. Free to start with a Google account (50 daily credits even on free), with Japanese prompt support. A SynthID watermark is embedded in outputs.

# 画像生成# 日本語対応

サポートチャットボット

Support Chatbot

User Local, Inc.'s (TSE Prime) enterprise AI chatbot build-and-operate service. It combines an in-house NLP engine that is robust to wording variations with generative-AI-powered Q&A auto-generation and document search (RAG-like) to automate customer support and internal inquiries. A dedicated team's support is included in the fee, with go-live in as little as one month and support for the government's LGWAN network.

# AI-OCR（文字認識）# 業務効率化# コスト削減# 日本語対応

グラリティ

Glarity

A multifunction browser extension from Felo Inc. that summarizes and translates YouTube, Google search, articles, PDFs and emails with AI, plus full-page translation, bilingual subtitles and AI chat. You can choose GPT-4o, Claude 3.5 Sonnet or Gemini 1.5 Pro (or your own API key), and it is integrated with the company Felo's "Felo AI Chat." 51 languages incl. Japanese; 1M+ users.

# 要約・翻訳# 検索・レコメンド# 日本語対応

インボックスウケトリセイキュウショ

invox 受取請求書

A cloud invoice-receiving service that converts invoices arriving in any format (mail, email, PDF, e-invoice) into accurate data via AI OCR plus operator verification, and automates everything from data entry to payment (bank-transfer data) and journal entries. Compliant with Japan's e-book-storage law and invoice system. By invox Inc. (formerly Deepwork).

チャットプラス

Chat Plus

A Japanese, AI-agent-collaborative conversation platform combining scenario-based chatbots with generative-AI answers and live human chat. Delivers high-accuracy support using your own data plus generative AI (OpenAI/Claude/Gemini, etc.). No setup fee, from 1,500 yen/month.

マイクロソフトデザイナー

Microsoft Designer

Microsoft Designer is Microsoft's design AI that generates and edits designs—social posts, posters, invitations—in seconds just by typing what you want. It offers DALL-E-based image generation and edits like background removal, blur, and Restyle, and integrates with Microsoft 365 (Word/PowerPoint). It's usable for free, and Microsoft 365 subscriptions (Personal ¥2,130/mo, Family ¥2,740/mo) increase AI credits. Note: output from the Designer app is under a personal, non-commercial license (official FAQ).

# デザイン生成# 画像生成# 日本語対応

リコーチャットボットサービス

RICOH Chatbot Service

RICOH Chatbot Service, from RICOH Japan, is a business chatbot you can deploy just by building Q&A in Excel, and where you choose between a Q&A type and a generative-AI type by purpose. Beyond the traditional dictionary/scenario type, a generative-AI series (Pro / internal knowledge / general knowledge) powered by ChatGPT (GPT-5) on Azure OpenAI has been added, with source display, human handoff, and Teams/LINE WORKS integration. The Q&A type is from ¥18,000/mo (excl. tax); the generative-AI type is by inquiry. 30-day free trial.

# AIチャットボット# ノーコード自動化# 日本語対応

コミュー

COMMU

A made-in-Japan project management tool from Curious Edge, Inc. Manage tasks as tickets, with Gantt charts, a Wiki, and multi-project support. An AI chatbot presents the day's tasks and checks and nudges progress, and the company calls it “Japan's first AI project management service” (updates may have stalled in recent years).

コトモ

Cotomo

A voice-based chat AI app from Starley Inc., a Japanese company. Talk to it and it answers aloud, remembering past conversations to become a familiar companion. Not a subscription: free at its core with pay-as-you-go top-ups — Everyday and Roleplay modes consume Candy (≈¥1) per reply, while voice-actor voices and items are bought with Cotomo Coins.

# ボイスボット# エンタメ／ゲーム・遊び# バーチャルヒューマン# 日本語対応

クラウドワークスエーアイ

クラウドワークス AI

[Service discontinued on June 30, 2026] CrowdWorks AI (formerly OrderMaid AI), offered by CrowdWorks, Inc., was a subscription platform bundling AI tools for writing, image generation, and transcription. Aimed at freelancers and individuals, it offered 330+ text-generation tools and more, but ended all services on June 30, 2026. See the official notice for refund and data details.

# テキスト生成# 画像生成# 業務効率化# 自動化・省力化# 日本語対応

メッシー

Meshy

Meshy generates textured 3D models from text or images in minutes (current model Meshy 7). On top of text-, image-, and multi-view-to-3D, it handles AI texturing, rigging, and 500+ animations, and bridges to Blender, Unity, Unreal, and Roblox. It is operated by Meshy LLC of Sunnyvale, California. The free plan gives 100 credits a month under CC BY 4.0 (commercial use with attribution; downloads capped at 10 models a month), with Pro starting at $20/month. The official pricing page can switch to local currency, and there is a discounted plan for students and educators. Built for game development, XR, and 3D printing.

# 画像生成# 動画生成# バーチャルヒューマン# 日本語対応

プライオ

プライオ（PRaiO）

A tool co-developed by Mynavi Corporation and Mitsubishi Research Institute (MRI) that uses AI to support document screening (entry sheets) in new-graduate hiring. Rather than an aptitude test that applicants take, it learns from a company's past selection data to score applicant priority—speeding up and standardizing first-round screening and reducing recruiters' workload. Adopted by 800+ companies.

# 要約・翻訳# 検索・レコメンド# 音声生成# 日本語対応

ノートブックエルエム

NotebookLM（現Gemini Notebook）

NotebookLM (now renamed to "Gemini Notebook") is a Google-built AI research and thinking partner that answers with citations based only on the materials you upload. You can use PDFs, websites, YouTube videos, audio, Google Docs, and more as sources, and the latest Gemini models handle summarizing, question answering, and material creation. Because it limits the basis for its answers to your sources, it curbs plausible-sounding errors and lets you grasp materials quickly, and it can also generate an Audio Overview (podcast-style conversational audio). It is free to use, with limits and available models increasing as it is included in Google AI Plus/Pro/Ultra (available in limited regions).

フレックスクリップ

Flex Clip

FlexClip, from PearlMountain (Hong Kong), is an AI-powered online video editor you use in the browser with templates and drag-and-drop, no install required. On top of 6,000+ templates and a huge stock library, it offers AI features like text/product-URL/PPT-to-video, auto subtitles in 140+ languages, AI narration, and background removal. Japanese UI supported. Pricing: Free / Plus from $11.99/mo / Business from $19.99/mo (billed annually).

# 動画生成# 字幕生成# 日本語対応

ポー

Poe

An AI platform by Quora that lets you use every major frontier model — GPT-5 series, Claude, Gemini, Grok and more — under a single subscription. It also supports image/video generation and custom bot creation, making it ideal for comparing and switching between models.

# AIエージェント# 検索・レコメンド# 日本語対応

ジェンスパークエーアイ

Genspark AI

An all-in-one AI workspace that automatically produces finished deliverables — slides, sheets, documents and more. It orchestrates multiple AI models and runs agents that handle everything from research to document creation and even AI phone calls.

# 検索・レコメンド# AIエージェント# 日本語対応

アドビファイアフライ

Adobe Firefly

Adobe Firefly is Adobe's all-in-one generative-AI creative studio for planning, generating, editing, and finishing images, video, and audio in one place. Beyond Adobe's own Firefly models (Image Model 5 and more), you can use 30+ models from Google, OpenAI, Flux, Kling, and others in one app. Adobe's own models are commercially safe with C2PA credentials and enterprise IP indemnification. Pricing: Free (daily free generations) / Firefly Standard from ¥1,580/mo (incl. tax), with Photoshop and more integration.

# 画像生成# デザイン生成# 生成AI（LLM）# 日本語対応

ノーラング

NoLang

Mavericks Inc.'s made-in-Japan AI video generator. Enter text, a URL, or a PDF, and the AI analyzes it and auto-generates a video with an avatar narrating the explanation in seconds. Strong for education, training, manuals, and inbound PR in addition to vertical shorts; supports 18 languages and a Chrome extension. Over 200,000 registered users.

# テキスト生成# 動画生成# 日本語対応

アナキンエーアイ

Anakin AI

An all-in-one AI platform that combines chat across many AI models, 1,000+ pre-built AI apps, and a no-code AI app/workflow builder. From text with GPT/Claude/Gemini to image, video, and voice generation, plus automation and agents, all at low cost.

# テキスト生成# 画像生成# 音声生成# 動画生成# AIエージェント# 日本語対応

ジュニー

Junie

JetBrains' autonomous AI coding agent integrated into JetBrains IDEs. From a natural-language instruction it autonomously plans, edits multiple files, runs commands and tests, leveraging deep IDE context like the index and debugger. GA since June 2026. Supports major IDEs including the free IntelliJ IDEA Community, with selectable models (Claude 4.5, Gemini 2.5, etc.). Used via the JetBrains AI subscription (Free/Pro $10/Ultimate $30, credit-based).

# コード生成# AIエージェント# AIモデル構築・管理# 自動化・省力化# 日本語対応

トラエ

Trae

An AI-native IDE developed by ByteDance. Built on VS Code, it lets you switch between an IDE mode you control yourself and a SOLO mode where AI autonomously handles everything from requirements to implementation, testing, and deployment. It has the GPT-5 series, Gemini 3 series, Kimi, MiniMax, and ByteDance Seed built in, with Claude and others addable as custom models via API key. Pricing is token-based, from a free tier up to Ultra $100.

# コード生成# AIエージェント# API・SDK# 生産性向上# 日本語対応

マジックエルピーオー

MagicLPO

[Availability to be confirmed] MagicLPO, provided by free web Inc. (formerly free web hope), was an AI-powered LPO (landing-page optimization) tool supporting AI improvement proposals, no-code editing, and A/B testing. However, as of August 2026 its official site is unreachable and it is no longer listed among the provider's products (no formal end-of-service notice). Please confirm the latest availability before considering it.

# デザイン生成# コピーライティング# コード生成# 品質向上・クリエイティブ支援# マーケティング# 日本語対応

リチェック

LeCHECK

An AI contract-review support cloud from lawyer-founded Lisse Co., Ltd. Rather than general-purpose generative AI, it is a "legal-specialized AI" based on lawyer-supervised fixed check rules; it detects contract risks with a priority (A/B/C) and presents revision suggestions and clause explanations. Japanese & English, 100+ contract types and 1,300+ templates, plus own-standard review and contract management. Deployed at 5,000+ companies.

# AI-OCR（文字認識）# 業務効率化# 自動化・省力化# 日本語対応

レディ

Readdy

Readdy is an AI website builder: describe the site you want and it generates the design and the code together. You can also start from a template, a screenshot, or a reference URL, then edit it in a no-code editor and publish on your own domain. The official site is available in Japanese. The free plan covers 250 credits a month and 2 projects; paid starts at $25/month for Starter ($15/month equivalent on an annual plan). It also includes GEO optimization to help you get cited in AI search, Credit Care that refunds spent credits when a generation misses, form-based lead capture, and an AI receptionist. More than 120,000 people use it worldwide (as of August 2026).

# LLMO・GEO（生成AI検索最適化）# デザイン生成# コード生成# テキスト生成# 業務効率化# 生産性向上# 日本語対応

チャチャ

Chacha

An AI creation community (formerly Anirole; now chacha-ai.io) where you build your own AI characters and enjoy chat/roleplay plus anime-style illustration generation. Adult-leaning, centered on romance and character conversation, with posting/browsing. USD-denominated diamond credits.

# AIチャットボット# ボイスボット# 品質向上・クリエイティブ支援# アイデア支援／創造ツール# エンタメ／ゲーム・遊び# 日本語対応

ロコアシ

An 'AI × pro' hybrid online-assistant / AI BPO service (by LOCOTABI Inc.) for delegating non-core work — back office, documents, research — to generative AI plus skilled staff, coordinated by a generative-AI director. From ¥45,000/mo (excl. tax). Note: new sign-ups are currently paused.

# プレゼン・スライド生成# スライド作成# 議事録作成# BPO# 日本語対応

ノベルシャフト

NovelShaft

NovelShaft is an AI-assisted novel-writing environment that keeps the manuscript, the manuscript outline, reference material such as characters and world-building, and conversations with AI together in one work. From shaping a fragment into an idea, through drafting and long-form revision, to export as Text, Markdown, DOCX, PDF, or EPUB 3 and publishing, everything happens on one screen, and the design puts the author in charge of what stays in the work: AI changes can be skipped before they are applied. It supports vertical writing, ruby, and read-aloud, handles Japanese and English works, and runs on the Web and iOS (iPhone and iPad). Pricing is a free Free plan (200 AI credits every 30 days) plus monthly Light $15, Standard $30, and Pro $90 plans.

# テキスト生成# アイデア支援／創造ツール# 品質向上・クリエイティブ支援# 日本語対応

ウェブターム

WebTerm

WebTerm is a free, browser-based Linux terminal built for practice. It implements 100+ commands — pwd, ls, cd through grep, find, chmod, pipes and redirection, Vim and Git — and grades each step by the actual state of the filesystem, so copying an answer doesn't get you past it. 15 mission-style tutorials plus a free-play sandbox. No install, no sign-up, 8 languages including Japanese (desktop browsers only).

ウェブタームラーン

WebTerm Learn

WebTerm Learn is a free platform for learning the terminal and Git systematically. Twelve courses and 129 lessons pair illustrated slides with hands-on exercises: terminal basics through advanced shell, SSH and system administration; Git from first commit through branching and team workflows; plus Vim and Herdr (a terminal multiplexer for coding agents). Every stage is followed by a short training course for repetition. All courses free; Japanese and English.

プロゲート

Progate

Progate, run by Progate, Inc., teaches programming through illustrated slides and in-browser exercises — no local setup required. 3.7 million users across 100+ countries. Alongside HTML/CSS, JavaScript, Python, SQL, Java and Go, it offers Command Line and Git lessons and AI courses including Generative AI Basics and Claude Code Introduction (beta), which covers CLAUDE.md, skills and permissions. Plus plan from ¥990/month, Pro from ¥2,490/month (tax incl.).

ドットインストール

dotinstall teaches programming in three-minute videos. Running since 2011, it publishes 576 lessons across 8,618 videos, covering web development, game development, data analysis and AI/ML — including Linux commands, Git and local environment setup. Free members get a subset; Premium is ¥1,480/month (¥1,080/month on the 12-month plan, tax incl.) and unlocks 7,668 videos, 940 quizzes and questions answered by working engineers.

パイザラーニング

paizaラーニング

paiza Learning, from Paiza, Inc., lets you run code straight from the browser with no environment setup. Three-minute videos pair with exercises, and the free tier alone includes 928 courses and 1,209 practice problems. Paid plans are ¥1,490 for one month or ¥11,760 for twelve (¥980/month, tax incl.), unlocking 3,149+ videos. Its distinguishing feature: your skill-check rank feeds directly into job applications on paiza's recruiting service.

リカージョン

Recursion

Recursion is a computer science platform designed by former Meta engineers, focused on CS fundamentals and backend development. Its 800+ hours of curriculum, drawn from US university programs, follows a deliberate 20% input / 80% output ratio, covering data structures and algorithms, OOP, databases, networking, operating systems and system design — all fully in Japanese. Free tier covers ~30 hours; paid plans are $61/month or $588/year.

ゼンスタディ

ZEN Study

ZEN Study (formerly N Prep School) is Dowango's learning app. Its programming track is written from scratch by working Dowango engineers: the introductory web application course covers JavaScript, Linux, Git/GitHub, Docker, web security and Hono, and the catalog extends to large-scale web development in Scala, computer science (data structures and algorithms, automata, networking), Android/iPhone apps and an intro to machine learning. ¥1,100/month (¥1,300 via App Store).

テックピット

Techpit

Techpit is a marketplace for programming tutorials written by working engineers, built around the idea of learning by shipping a real service. It offers 100+ tutorials spanning Ruby, PHP, Python and Next.js, sold individually or through Techpit Unlimited (¥2,980/month), which unlocks 90+ of them. INTLOOP Inc. acquired the business in November 2025; it now runs at techpit.intloop.com.