Open source documentation-tool projects
Every project in the registry tagged documentation-tool, ranked by real GitHub adoption.
The world’s fastest framework for building websites.
API Documentation Browser
🃏 A magical documentation site generator.
📘 OpenAPI/Swagger-generated API Reference Documentation
A simple, Git-powered wiki with a local frontend and support for many kinds of markup and content.
Offline documentation browser. Your personal reference library, searchable in an instant.
🧱 Describe your site, AI builds it, you own it as Markdown. Snap together Tailwind blocks like Lego — landing pages, blogs, portfolios, docs & more. No AI slop
Automatically generates beautiful and easy-to-read ER diagrams from your database.
tbls is a CI-Friendly tool to document a database, written in Go.
:notebook_with_decorative_cover: The missing documentation tool for your Angular, Nest & Stencil application
A plain text note-taking assistant
Modern Confluence alternative designed for internal & external docs, built with Go + EmberJS
A next-generation progressive site generator & fullstack framework, powered by Ruby
🐍 ➡️ 📜 Auto-generate API docs for Python projects
Open-source CMS for text-driven websites
Embrace a docs-as-code approach to build, version, and publish Git-driven documentation sites using Markdown and a visual editor
Related tags
Frequently asked questions
How many open source documentation-tool projects are there?
This registry tracks 16 projects tagged documentation-tool, with 247,194 GitHub stars between them. The most-adopted is hugo at 90,317 stars.
Are these documentation-tool projects free to use?
Yes — 16 of the 16 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which documentation-tool project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these documentation-tool projects still maintained?
13 of the 16 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.