20 self-hosted Atlassian Confluence alternatives

Open-source, privacy-focused collaborative workspace for notes, databases, kanban boards and AI-assisted writing; desktop, mobile and web clients with local-first storage.

74.4k stars5.7k forksAGPL-3.0last commit 26 Jun 2026Actively maintained

All-in-one, privacy-focused workspace that merges docs, whiteboards and databases with real-time collaboration and multimodal AI assistance.

70.9k stars5.1k forkslast commit 28 Jul 2026Actively maintained

An open source static site generator for building and maintaining documentation and project websites with Markdown/MDX, React, versioning, and i18n.

65.7k stars10k forksMITlast commit 23 Jul 2026Actively maintained

Memos is a lightweight, privacy-first self-hosted note-taking service with Markdown, fast search, and sharing features for personal notes, wikis, and team knowledge.

61.8k stars4.6k forksMITlast commit 27 Jul 2026Actively maintained

Open-source alternative to Jira/Linear for tasks, cycles, docs and analytics; offers cloud and self-hosted deployments.

55.1k stars5.1k forksAGPL-3.0last commit 21 Jul 2026Actively maintained

Open-source, block-oriented personal knowledge manager with Markdown WYSIWYG, block-level two-way links, encrypted sync, Docker deployment and AI integrations.

45.5k stars2.9k forksAGPL-3.0last commit 21 Jul 2026Actively maintained

Outline is a fast, collaborative knowledge base for teams, featuring markdown docs, real-time editing, AI-powered search, and Slack integrations.

39.9k stars3.5k forkslast commit 28 Jul 2026Actively maintained

A modern, extensible Node.js wiki with Markdown editing, powerful admin tools, multiple auth options, and support for popular SQL databases.

28.7k stars3.3k forksAGPL-3.0last commit 1 May 2026Actively maintained

Huly is an open-source all-in-one platform combining project management, team chat, and collaborative documentation as an alternative to tools like Jira, Linear, Slack, and Notion.

27.1k stars2.1k forksEPL-2.0last commit 27 Jul 2026Actively maintained

Open-source Confluence/Notion alternative for team wikis and documentation with real-time editing, spaces, permissions, diagrams, and search.

21.1k stars1.5k forksAGPL-3.0last commit 21 Jul 2026Actively maintained

BookStack is a simple documentation and wiki platform with a WYSIWYG and optional Markdown editor, full-text search, permissions, and integrated authentication.

18.9k stars2.4k forksMITlast commit 23 Jul 2026Actively maintained

Collaborative note-taking, wiki, and documentation platform with real-time editing, access control, and offline support. Built with Django and React/Next.js.

16.7k stars610 forksMITlast commit 23 Jul 2026Actively maintained

Open-source collaborative documentation and wiki platform with real-time editing, offline sync, export features and flexible self-hosting options.

16.7k stars610 forksMITlast commit 23 Jul 2026Actively maintained

Git-backed wiki engine that supports multiple markup formats, an integrated editor, and features like diagrams, math rendering, citations, and RSS feeds.

14.3k stars1.6k forksMITlast commit 31 Aug 2025Slowing down

TiddlyWiki is a self-contained, highly customizable personal wiki that runs in the browser or on Node.js, enabling notes, knowledge bases, and documentation in one file.

8.6k stars1.3k forkslast commit 24 Jul 2026Actively maintained

Open-source, web-based collaborative Markdown editor for real-time notes, diagrams, and slide presentations with revisions and access controls.

7.3k stars574 forksAGPL-3.0last commit 5 Jul 2026Actively maintained

Self-hosted, browser-based personal knowledge management platform with Markdown pages, wiki-style links, tasks, queries, and Lua scripting for automation.

5.7k stars450 forksMITlast commit 24 Jul 2026Actively maintained

Open-source, local-first Slack and Notion alternative combining team chat, rich docs, databases, and file management with offline-first sync and self-hosting.

5k stars308 forksApache-2.0last commit 3 Apr 2026Actively maintained

DokuWiki is a lightweight, file-based wiki engine with ACL, versioning, and a rich plugin/template ecosystem for documentation and knowledge bases.

4.7k stars918 forksGPL-2.0last commit 25 Jul 2026Actively maintained

Raneto is an open-source, file-based Markdown knowledge base for Node.js with web editing, full-text search, theming, and optional login protection—no database required.

2.9k stars443 forksMITlast commit 18 Mar 2026Actively maintained