Best Self-Hosted Knowledge Management Tools in 2026

Tools for capturing, organizing, and retrieving knowledge, notes, and information for individuals and teams.

The top-rated pick is AFFiNE with 72,985 GitHub stars.

6 self-hosted knowledge management tools — ranked by GitHub stars.Browse all

AFFiNE

Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.

Alternative to:

Notion

Open Notebook

Open-source, privacy-first alternative to Google NotebookLM with multi-model AI support, podcast generation, and self-hosting.

Alternative to:

NotebookLM

TriliumNext Notes

Hierarchical personal knowledge base with powerful note-taking, rich text editing, and scripting capabilities.

Alternative to:

Notion

Onyx

Onyx is an open-source AI chat and enterprise search platform with RAG that works with every LLM. Bring your own model, connect your tools, and unify all your team's knowledge.

Alternative to:

Glean

Focalboard

Focalboard is an open-source, self-hosted project management tool — a free alternative to Trello, Notion, and Asana for boards, docs, and team planning across every workflow.

Alternative to:

Trello

Apache Answer

Open-source Q&A platform for communities, help centers, and internal team knowledge bases, with voting, reputation, and a plugin system.

Alternative to:

Stack Overflow

Why self-host?

Self-hosting puts you in control. You own your data, avoid vendor lock-in, and eliminate recurring subscription costs. For teams handling sensitive data or operating under strict compliance requirements, running your own infrastructure is often the only viable option.