Open Source Documentation & Knowledge Base Software

Documentation & Knowledge Base software organizes internal wikis, technical manuals, and shared notes into a searchable structure. These tools prevent information loss by centralizing guides and API specifications in a single location. This type of software serves teams and individuals who need to maintain a permanent record of institutional knowledge. Self-hosting these apps ensures that sensitive company procedures and private research remain on local servers. You avoid external hosting costs while keeping your documentation accessible to authorized collaborators through a private network.

This page lists 34 open source tools in the Documentation & Knowledge Base category. The most popular are Outline, Trilium and Wiki.js. Most use the MIT or AGPL-3.0 license, and 25 offer an official Docker image.

Outline

Wiki

A collaborative knowledge base for teams to create internal documentation and wikis with real-time editing capabilities.

40k StarsWeb App / Server

Trilium

Note-Taking

A hierarchical note taking application designed for building large, scriptable personal knowledge bases with visual mapping.

37k StarsDesktop App

Wiki.js

Wiki

A lightweight wiki application built on Node.js for creating and managing collaborative documentation and knowledge bases.

29k StarsWeb App / Server

Docmost

Wiki

A self-hosted collaborative wiki and documentation platform for managing internal knowledge bases with real-time editing capabilities.

21k StarsWeb App / Server

UVDesk

Helpdesk

A service oriented ticketing system for managing customer support queries and organizing a knowledge base.

19k StarsWeb App / Server

Overleaf

Technical Writing Platforms

A real-time collaborative LaTeX editor for creating scientific documents and academic papers in a web browser.

18k StarsWeb App / Server

Docs

Collaborative Notes & Wikis

A collaborative editor for writing and organizing knowledge through real-time editing and structured document hierarchies.

17k StarsWeb App / Server

Scalar

API Clients

Generates interactive API documentation and provides an offline first client for testing OpenAPI and Swagger specifications.

16k StarsCross-Platform App

Apache Answer

Q&A Platforms

A self-hosted Q&A platform for building community forums, help centers, and internal knowledge management systems for teams.

16k StarsWeb App / Server

Apache Answer

Q&A Platforms

A Q&A platform for teams to build community forums, help centers, and knowledge management systems.

16k StarsWeb App / Server

Gollum

Wiki

A git-based wiki system that provides a web interface for managing markup files in a repository.

14k StarsWeb App / Server

Zettlr

Note-Taking

A markdown editor and publication workbench designed for academic writing and zettelkasten knowledge management.

13k StarsDesktop App

Zeal

Internal Knowledge Bases

Browse and search API documentation offline using a local library of downloadable docsets for developers.

13k StarsDesktop App

Fumadocs

Technical Writing Platforms

A framework for building documentation websites using MDX and React with support for multiple web frameworks.

13k StarsWeb App / Server

TiddlyWiki

Wiki

A non-linear personal web notebook and interactive wiki implemented as a single HTML file or Node.js application.

8.6k StarsWeb App / Server

HedgeDoc

Collaborative Notes & Wikis

Create and edit markdown notes in real time with a collaborative editor for teams and individuals.

7.3k StarsWeb App / Server

DokuWiki

Wiki

A flexible open source wiki engine that stores data in plain text files without a database.

4.7k StarsWeb App / Server

BoostNote-App

Agile Project Management

A document driven project management and note taking tool designed for DevOps and remote development teams.

4k StarsDesktop App

Raneto

Wiki

A simple Markdown powered knowledge base for Node.js that stores all content in flat files.

2.9k StarsWeb App / Server

Documize

Wiki

A self-hosted knowledge management solution for organizing and unifying internal and customer-facing technical documentation.

2.4k StarsWeb App / Server

Zim

Wiki

A graphical text editor for maintaining a collection of wiki pages stored as plain text files.

2.2k StarsWeb App / Server

TidGi

Personal Knowledge Management (PKM)

A local-first knowledge management tool based on TiddlyWiki with integrated Git backup and blogging capabilities.

2k StarsDesktop App

Vrite

Technical Writing Platforms

A collaborative developer content platform for creating and deploying product documentation, technical blogs, and internal knowledge bases.

2k StarsWeb App / Server

django-wiki

Wiki

A modular wiki system for Django that uses Markdown and structured data for knowledge management.

1.9k StarsWeb App / Server

Otter Wiki

Wiki

A minimalistic wiki for collaborative content management using Python, Markdown, and Git for version control.

1.5k StarsWeb App / Server

XWiki

Wiki

A self-hosted wiki platform for structuring and sharing organizational knowledge through collaborative notes and internal documentation.

1.3k StarsWeb App / Server

Scoold

Forum

A Q&A and knowledge sharing platform for teams designed to facilitate internal information exchange.

921 StarsWeb App / Server

LeafWiki

Wiki

A self-hosted wiki that uses a single Go binary and stores Markdown files on disk with SQLite.

918 StarsWeb App / Server

DOCAT

Internal Knowledge Bases

Host multiple versions of static documentation projects using a simple and versioned hosting interface.

905 StarsWeb App / Server

Typemill

Traditional & Flat-File CMS

A flat-file content management system for creating documentation, manuals, and websites using markdown files and ebook conversion.

609 StarsWeb App / Server
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