Best Self-Hosted Note Taking & Knowledge Management Tools in 2026

Apps for capturing notes, organizing information, and building personal knowledge systems and second brains.

The top-rated pick is memos with 58,269 GitHub stars.

5 self-hosted note taking & knowledge management tools — ranked by GitHub stars. Browse all

memos

A modern, open-source, self-hosted knowledge management and note-taking platform designed for privacy-conscious users and organizations.

Alternative to:

Obsidian

TriliumNext Notes

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

Alternative to:

Notion

HedgeDoc

Real-time collaborative markdown note editor you can self-host — write together with rich formatting and seamless sharing.

Alternative to:

Google Docs

SilverBullet

Markdown-based note-taking app with powerful live queries, templates, and a pluggable scripting system for power users.

Alternative to:

Notion

Atomic

A self-hosted personal knowledge base that turns markdown notes into an AI-augmented knowledge graph with semantic search and wiki synthesis.

Alternative to:

Pinboard

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.

Want to compare all open source options including cloud-hosted ones? See the best open source note taking & knowledge management tools →