The most powerful and extensible open source Wiki software.
ReplacesConfluence
Curated open-source alternatives to the software you already use.
The most powerful and extensible open source Wiki software.
ReplacesConfluence
Is a free and open-source, cross-platform hierarchical note taking application with focus on building large personal knowledge bases.
ReplacesNotion
Self-hostable, markdown-native team wiki with live collaboration, full-text and semantic search, WebDAV sync, public spaces, Slidev decks, PDF export, and a built-in MCP server so AI agents are first-class editors.
ReplacesNotion
SilverBullet is a personal knowledge base and collaborative note-taking platform.
ReplacesNotion
Rote is an open-source multi-platform personal note system featuring an open API, full data ownership, and effortless Docker deployment.
ReplacesNotion
Outline is a self-hosted knowledge base and documentation platform that allows you to build and manage your own knowledge base applications.
ReplacesNotion
An Otter Wiki is a simple, lightweight, and fast wiki engine built with Python and Flask. It provides a user-friendly interface for creating and managing wiki content with markdown support.
ReplacesNotion
Take notes, plan tasks and track habits - free, ad-free, open source, with all data on your own server. Native apps for Windows, Linux, Android, iOS and macOS sync to it.
ReplacesNotion
Memos is a self-hosted, open-source note-taking application that allows you to create, organize, and share notes with ease. It provides a simple and effective solution for managing your notes from anywhere.
ReplacesNotion
Markup is a fast, keyboard-first markdown workspace with live preview, graph view, whiteboards, mind maps, and PostgreSQL-powered cloud sync.
ReplacesNotion
A self-hostable bookmark-everything app (links, notes and images) with AI-based automatic tagging and full text search. Previously known as Hoarder.
ReplacesNotion
Joplin Server is the self-hosted sync backend for Joplin notes, notebooks, and attachments.
ReplacesNotion
Huly — All-in-One Project Management Platform (alternative to Linear, Jira, Slack, Notion, Motion)
ReplacesNotion
A self-hosted, modern note-taking web app that saves your notes as plain text Markdown files.
ReplacesNotion
Docmost, is an open-source collaborative wiki and documentation software.
ReplacesNotion
One wiki for all your agents. AI agents read and write linked markdown pages over MCP from any machine, and people see what they know in a web app: the link graph, every page and its history.
ReplacesNotion
One personal context file every AI agent reads before answering and proposes updates to as it learns about you. Requires an external Supabase project (see instructions).
ReplacesFirebase
Open-source and local-first Slack and Notion alternative that puts you in control of your data
ReplacesNotion
CodeX is a comprehensive platform that brings together passionate engineers, designers, and specialists to create high-quality open-source projects. It includes Editor.js, Hawk.so, CodeX Notes, and more.
ReplacesNotion
BookStack is a self-hosted platform for creating beautiful, feature-rich documentation sites.
ReplacesConfluence
Arche is a self-hosted AI workspace platform that spawns per-user OpenCode coding containers backed by a shared Knowledge Base. Requires the `arche-internal` external Docker network and `/opt/arche/{kb-content,kb-config,users}` directories on the host before deploy. Images are linux/amd64 by default; override `ARCHE_WEB_IMAGE` and `ARCHE_WORKSPACE_IMAGE` to the `-arm64` tag variants for ARM64 hosts.
ReplacesNotion
Anytype is a personal knowledge base—your digital brain—that lets you gather, connect and remix all kinds of information. Create pages, tasks, wikis, journals—even entire apps—and define your own data model while your data stays offline-first, private and encrypted across devices. After installation, you can view the Anytype client configuration by running `cat /data/client-config.yml` inside the service container.
ReplacesNotion
Affine Pro is a modern, self-hosted platform designed for collaborative content creation and project management. It offers an intuitive interface, seamless real-time collaboration, and powerful tools for organizing tasks, notes, and ideas.
ReplacesNotion
A workspace that works the way you think.
ReplacesNotion
Stars from GitHub · Oct 5, 2026. Comparisons describe overlapping use cases, not feature parity.
