Documentation GitHub Repositories (2026) · Open Source Tools

Free domain registration and practical DNS learning resources for everyone.

Codebase intelligence for AI and humans: code health scores, auto-generated docs, git analytics, dead code detection, and architectural decisions via MCP.

Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation

A modern static site generator by the Material for MkDocs team

Easy to maintain open source documentation websites.

Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner as markdown

Powerful note-taking without the hassle.

WTFM: Write the F***ing Manual. A plugin for your coding agent that writes your user docs, screenshots included.

Docs is an open-source text editor: web-native, made for real-time collaboration, cleanly structured documents and sub-documents with full ownership of your data. Built to scale with Django and React.

API Documentation Browser

Simple, Fast, Code first and Compile time generated OpenAPI documentation for Rust

LeafWiki - Self-hosted wiki. Single Go binary, SQLite, Markdown on disk. No external database required.

A standard style for README files

📃 A curated and up-to-date list of resources on software documentation templates, tools, guides, examples, etc.

Wiki.js | Next Generation Open Source Wiki

Free and Open Source Wiki built on top of Frappe

French-army-knife Toolbox for Salesforce. Orchestrates base commands and assist users with interactive wizards to make much more than native Salesforce CLI + Allows you to define a complete CI/CD Pipeline and Schedule a daily Metadata backup & monitoring of your orgs + AI-enhanced org Documentation

A Markdown Editor That Lives in Your Browser, Desktop, and a Single URL. Fast GitHub-style Markdown editing with live preview, diagrams, LaTeX, syntax highlighting, PDF export, and multi-tab support across web, desktop, and Docker.

The why layer of repo-native project memory: the reasoning behind a codebase as Markdown in the repo, versioned by Git, for coding agents and humans, so nothing rejected is proposed twice. No database, no daemon, no account.

Docmost is an open-source collaborative wiki and documentation software. It is an open-source alternative to Confluence and Notion.