Wikis & Knowledge Bases

20 self-hosted open source alternatives in this category

AppFlowy

An open workspace for notes, wikis, and projects

Notion-style workspace for docs, wikis, and task databases with rich blocks, templates, and optional AI—available across desktop and mobile.

Alternative to:

Notion+3

AFFiNE

Local-first workspace for docs, notes, and whiteboards

61.6k

4.2k

Last commit: 3d ago

Local-first, open-source workspace combining docs, wikis, and whiteboards with real-time collaboration and optional self-hosted cloud sync.

Alternative to:

Notion+4

Gitea

A lightweight, self-hosted Git service

53k

6.3k

Last commit: 1d ago

Self-hosted Git server with a web UI, issues, pull requests, Actions CI/CD, packages, and fine-grained access controls.

Alternative to:

GitHub+3

SiYuan

Privacy-first personal knowledge base with block references

40.4k

2.5k

Last commit: 11d ago

Self-hostable note app with Markdown, block references, backlinks, and local-first sync for building a personal knowledge base and wiki-like docs.

Alternative to:

Notion+5

Trilium Notes

Hierarchical note-taking with backlinks, search, and automation

33.9k

2.3k

Last commit: 1d ago

Self-hostable personal knowledge base with a tree-structured notebook, rich-text and code notes, backlinks, full-text search, and scripting/automation.

Alternative to:

Notion+7

Wiki.js

Modern, extensible wiki and documentation platform

27.6k

3.1k

Last commit: 2d ago

A Node.js-based wiki for team documentation and knowledge bases with Markdown, rich editor, permissions, Git sync, and multiple authentication options.

Alternative to:

Confluence+7

Docmost

Collaborative wiki for team documentation and knowledge bases

18.5k

1.1k

Last commit: 27d ago

Self-hosted collaborative wiki and knowledge base with pages, spaces, permissions, and full-text search for internal documentation.

Alternative to:

Confluence+5

BookStack

A simple, structured platform for documentation and wikis

18k

2.3k

Last commit: 3d ago

BookStack is a self-hosted wiki and documentation platform with a book/chapter/page structure, full-text search, WYSIWYG and Markdown editing, and role-based access control.

Alternative to:

Confluence+5

OpenProject

Open source project management for classic and agile teams

13.5k

Last commit: 2d ago

Self-hosted project management platform with work packages, Agile boards, Gantt charts, roadmaps, wikis, time tracking, and team collaboration.

Alternative to:

Jira+7

Blinko

A self-hosted personal knowledge base for quick notes

9.1k

640

Last commit: 8d ago

Self-hosted notes and personal knowledge base for capturing, tagging, and organizing thoughts with markdown support and fast search.

Alternative to:

Notion+5

TiddlyWiki

A non-linear personal wiki in a single file

8.5k

1.2k

Last commit: 2d ago

A highly customizable personal wiki/knowledge base that runs in the browser, supports plugins and transclusion, and can be saved as a single HTML file or hosted via Node.js.

Alternative to:

Notion+7

HedgeDoc

Real-time collaborative Markdown notes with publishing options

6.8k

516

Last commit: 2d ago

Self-hosted, real-time collaborative Markdown editor for teams, with note sharing, history, and flexible publishing via links and permissions.

Alternative to:

Confluence+7

HumHub

Modular social network and intranet platform for teams

6.6k

1.7k

Last commit: 29d ago

Self-hosted social networking and intranet software with spaces, activity streams, user profiles, and a module marketplace for collaboration.

Alternative to:

Microsoft Teams+6

DokuWiki

Simple, file-based wiki with strong access control

4.5k

911

Last commit: 19d ago

A PHP wiki that stores pages as text files, offering ACL, versioning, plugins, and structured navigation without requiring a database.

Alternative to:

Confluence+5

SilverBullet

Extensible, markdown-first personal wiki in your browser

4.5k

330

Last commit: 1d ago

Self-hosted, markdown-based personal knowledge base with backlinks, full-text search, and a programmable extension system for automations and custom commands.

Alternative to:

Notion+8

Colanode

Open-source collaborative workspace for notes, docs, and tasks

4.3k

229

Last commit: 1d ago

Self-hosted collaborative workspace combining notes, documents, and lightweight project organization for teams that want a Notion-style hub on their own infrastructure.

Alternative to:

Notion+5

Raneto

A Markdown-powered knowledgebase for Node.js

2.9k

439

Last commit: 3mo ago

Self-hosted, file-based knowledge base and documentation portal built with Node.js and Markdown.

Alternative to:

Confluence+4

Grimoire

Self-hosted personal knowledge base for Markdown notes

2.7k

Last commit: 7mo ago

Grimoire is a self-hosted personal knowledge base for organizing Markdown notes with tags, backlinks, and fast full-text search via a web UI.

Alternative to:

Notion+4

Taiga

Agile project management for Scrum and Kanban teams

1.9k

506

Last commit: 2mo ago

Taiga is an agile project management platform with Scrum and Kanban boards, backlog and sprint planning, issue tracking, and a REST API, deployable via Docker.

Alternative to:

Jira+8

XWiki

Extensible enterprise wiki and knowledge base platform

1.2k

611

Last commit: 2d ago

Java-based enterprise wiki for collaborative documentation with extensions, scripting, workflows, access control, and full version history.

Alternative to:

Confluence+5