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Open Source Note Taking & Knowledge Management Tools

Open source note taking & knowledge management tools

projects 25 combined stars ★ 535K refresh nightly
Note Taking & Knowledge Management is one of the most active slices of the open source world — the 25 projects below are ranked by GitHub stars, which makes this page roughly a community-voted shortlist rather than a vendor-curated catalogue. Every card shows the license and the last-commit date, so you can filter out the two failure modes of free software in one glance: restrictive licensing that blocks your use case, and abandonment that leaves you maintaining a fork. When two projects look comparable, prefer the one with more recent activity and the more permissive license (MIT/Apache-2.0 over AGPL) unless copyleft specifically serves your goals. Hover into any project for its full README — the documentation quality is usually the honest tell of engineering quality.

All Note Taking & Knowledge Management tools

AppFlowy ★ 77K

AI workspace for docs, projects, and wikis you control

rank001 licenseAGPL-3.0 written inDart typeNote Taking & Knowledge Management
Memos ★ 63K

Self-hosted timeline for quick notes, logs, and snippets

rank002 licenseMIT written inGo typeNote Taking & Knowledge Management
Joplin ★ 56K

Encrypted note-taking that syncs across all your devices

rank003 licenseNOASSERTION written inTypeScript typeNote Taking & Knowledge Management
SiYuan ★ 46K

Privacy-first knowledge management with block-level linking

rank004 licenseAGPL-3.0 written inTypeScript typeNote Taking & Knowledge Management
Logseq ★ 45K

Privacy-first knowledge base that connects your notes

rank005 licenseAGPL-3.0 written inClojure typeNote Taking & Knowledge Management
Outline ★ 41K

Fast, collaborative wiki for teams who need organized docs

rank006 licenseNOASSERTION written inTypeScript typeNote Taking & Knowledge Management
Open-Notebook ★ 39K

AI-powered research notebook with full privacy control

rank007 licenseMIT written inTypeScript typeNote Taking & Knowledge Management
Khoj ★ 37K

AI second brain for research, automation, and personal agents

rank008 licenseAGPL-3.0 written inPython typeNote Taking & Knowledge Management
Docmost ★ 22K

Self-hosted wiki with AI, compliance, and real-time editing

rank009 licenseAGPL-3.0 written inTypeScript typeNote Taking & Knowledge Management
Tolaria ★ 20K

Local-first, Git-native personal knowledge base with AI

rank010 licenseAGPL-3.0 written inTypeScript typeNote Taking & Knowledge Management
SurfSense ★ 16K

Privacy-first knowledge base with any AI model you choose

rank011 licenseNOASSERTION written inPython typeNote Taking & Knowledge Management
Zotero ★ 15K

Collect, organize, cite, and share research in one place

rank012 licenseNOASSERTION written inJavaScript typeNote Taking & Knowledge Management
Notesnook ★ 15K

Zero-knowledge encrypted notes that sync across all devices

rank013 licenseGPL-3.0 written inTypeScript typeNote Taking & Knowledge Management
Blinko ★ 11K

AI-Powered Note Taking App

rank014 licenseGPL-3.0 written inTypeScript typeNote Taking & Knowledge Management
Anarlog ★ 9.3K

Private meeting notes, no bots, files you own

rank015 licenseMIT written inTypeScript typeNote Taking & Knowledge Management
AnyType ★ 8.8K

Private workspace for notes, tasks, and databases

rank016 licenseNOASSERTION written inTypeScript typeNote Taking & Knowledge Management
Standard Notes ★ 6.6K

Secure, encrypted notes for your digital life

rank017 licenseAGPL-3.0 written inTypeScript typeNote Taking & Knowledge Management
Vrite ★ 2.0K

Collaborative content creation for technical teams

rank018 licenseNOASSERTION written inTypeScript typeNote Taking & Knowledge Management
Beaver Notes ★ 1.3K

Local-first notes app with no cloud, no AI, no tracking

rank019 licenseMIT written inJavaScript typeNote Taking & Knowledge Management
XWiki ★ 1.3K

Open-source knowledge management and collaboration platform

rank020 licenseLGPL-2.1 written inJava typeNote Taking & Knowledge Management
Zen ★ 1.2K

Clean, distraction-free note-taking with local storage

rank021 licenseAGPL-3.0 written inJavaScript typeNote Taking & Knowledge Management
Darkwrite ★ 315

Distraction-free note-taking with powerful features

rank022 licenseAGPL-3.0 written inTypeScript typeNote Taking & Knowledge Management
OpenNotas ★ 179

Fast, secure, and free personal note-taking app

rank023 licenseNOASSERTION written inVue typeNote Taking & Knowledge Management
Justnote ★ 67

Privacy-focused note-taking made simple and fast

rank024 licenseGPL-2.0 written inTypeScript typeNote Taking & Knowledge Management
itsnotes ★ 32

Self-hosted sticky notes with better organization

rank025 licenseMIT written inJavaScript typeNote Taking & Knowledge Management

Frequently asked questions

How many open source Note Taking & Knowledge Management tools are there?

This registry tracks 25 open source Note Taking & Knowledge Management projects, with 534,597 combined GitHub stars. The list is ranked by stars and refreshed nightly.

What is the most popular open source Note Taking & Knowledge Management project?

AppFlowy leads this category with 76,797 GitHub stars, followed by Memos.

Are these Note Taking & Knowledge Management tools free?

Yes — every project listed here is open source. Some also offer paid hosted versions alongside the free self-hosted option; the licence for each project is shown on its card.