Best Knowledge Base & Docs (2026)
Wikis, notes, and connected workspaces.
Knowledge-base and docs tools are the connected workspace where teams write, plan, and store institutional knowledge. The open alternatives here offer blocks, databases, and real-time editing while letting you keep sensitive documents on infrastructure you control.
Switching from a specific tool?
Open-source, local-first Notion alternative built in Rust and Flutter with full self-hosting support.
- AGPL-licensed core with true local-first storage and full offline support
- Native desktop apps on macOS, Windows, and Linux built with Flutter
- Database feature set is less mature than Notion's — rollups and complex formulas are still catching up
Open-source local-first workspace merging a rich document editor, an infinite whiteboard, and a structured database.
- Unique whiteboard-meets-document approach covers brainstorming and structured writing in one tool
- Local-first CRDT engine means your data exists on disk before any sync
- Younger project than Notion or AppFlowy — some database features remain early-access
Fast, collaborative team wiki with Markdown editing, nested collections, and a self-hostable server.
- Clean, fast reading and writing experience purpose-built for team wikis
- Self-hostable with Docker — source available under BSL with a one-year delay to open source
- BSL license means commercial redistribution is restricted; it is not classic OSI open source
All-in-one connected workspace combining docs, wikis, and databases in a single flexible canvas.
- Highly flexible page model adapts to docs, project trackers, CRMs, and wikis equally well
- Polished cross-platform apps with reliable real-time collaboration
- No self-hosting option — all data lives on Notion's servers with no local-first mode
FAQ
What is the best knowledge base & docs tool?
AppFlowy is a top pick: Open-source, local-first Notion alternative built in Rust and Flutter with full self-hosting support.
Are there free or open-source knowledge base & docs tools?
Yes — AppFlowy, AFFiNE, Outline are open source and most can be self-hosted.