#1
Open-source, privacy-focused collaborative workspace for notes, databases, kanban boards and AI-assisted writing; desktop, mobile and web clients with local-first storage.
76k stars5.9k forksAGPL-3.0last commit Actively maintained
20 self-hosted Tettra alternatives
Tettra is a SaaS internal knowledge base and knowledge management platform that captures, organizes, and shares company documentation. It supports importing Docs/Notion/PDFs, page verification workflows, Slack and Google Workspace integrations, and an AI assistant for Q&A and search.
Alternatives to Tettra
#2
Open-source alternative to Jira/Linear for tasks, cycles, docs and analytics; offers cloud and self-hosted deployments.
58.4k stars5.5k forksAGPL-3.0last commit Actively maintained
#3
Outline is a fast, collaborative knowledge base for teams, featuring markdown docs, real-time editing, AI-powered search, and Slack integrations.
40.3k stars3.5k forkslast commit Actively maintained
#4
A modern, extensible Node.js wiki with Markdown editing, powerful admin tools, multiple auth options, and support for popular SQL databases.
28.8k stars3.3k forksAGPL-3.0last commit Actively maintained
#5
Open-source Confluence/Notion alternative for team wikis and documentation with real-time editing, spaces, permissions, diagrams, and search.
21.5k stars1.5k forksAGPL-3.0last commit Actively maintained
BookStack is a simple documentation and wiki platform with a WYSIWYG and optional Markdown editor, full-text search, permissions, and integrated authentication.
19k stars2.4k forksMITlast commit Actively maintained
#7
Open-source collaborative documentation and wiki platform with real-time editing, offline sync, export features and flexible self-hosting options.
16.8k stars620 forksMITlast commit Actively maintained
Collaborative note-taking, wiki, and documentation platform with real-time editing, access control, and offline support. Built with Django and React/Next.js.
16.8k stars620 forksMITlast commit Actively maintained
#9
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 Slowing down
#10
DokuWiki is a lightweight, file-based wiki engine with ACL, versioning, and a rich plugin/template ecosystem for documentation and knowledge bases.
4.7k stars919 forksGPL-2.0last commit Actively maintained
#11
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 stars442 forksMITlast commit Actively maintained
#12
Documize is a self-hosted knowledge base and documentation platform for internal and external docs, offering spaces, labels, search, and enterprise-friendly authentication.
2.4k stars239 forksAGPL-3.0last commit Actively maintained
#13
Self-hostable note-taking and knowledge base app with an extended Markdown editor, fast search, tagging, workspaces, sharing permissions, exports, and offline PWA support.
2.4k stars163 forksMITlast commit Actively maintained
#14
Gitit is a wiki engine that stores pages in a git-compatible repo, uses Pandoc for markup, and runs on Happstack.
2.3k stars232 forksGPL-2.0last commit Actively maintained
#15
Extensible Django wiki application with Markdown pages, versioning, permissions, and a pluggable architecture for integrating knowledge bases into Django sites.
1.9k stars588 forksGPL-3.0last commit Actively maintained
A minimalistic wiki for collaborative documentation, storing pages in Git and editing in Markdown with version history, attachments, and user authentication.
1.5k stars124 forksMITlast commit Actively maintained
#17
Enterprise-grade open-source wiki platform for knowledge management, intranets and web applications.
1.3k stars661 forksLGPL-2.1last commit Actively maintained
#18
Self-hosted Markdown note-taking web app with multi-user vaults, real-time collaboration, fast search, templates, backlinks/tags, PDF export, and PWA support.
1.1k stars44 forksMITlast commit Actively maintained
#19
Open source Stack Overflow clone for teams: Q&A, knowledge sharing, search, spaces, reputation, webhooks, and integrations via a Para backend.
922 stars230 forksApache-2.0last commit Actively maintained
#20
Open-source, self-hosted note-taking and documentation app with rich text & Markdown editors, search, attachments, workspaces, REST API and OIDC support.
769 stars31 forksMITlast commit Actively maintained
What replacing Tettra actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 19 of 20 shipped a commit in the last six months. Licences in this list: AGPL-3.0, MIT, GPL-2.0, GPL-3.0, LGPL-2.1. In exchange you take on hosting, backups and updates yourself.
Browse everything in Wikis & Knowledge Bases.
