Open Source Personal Knowledge Management (PKM) Tools using Esbuild
A curated collection of the best open source tools for organizing personal information and building knowledge graphs. using Esbuild.
Encrypted note-taking that syncs across all your devices
Stars
56,481Last commit
15 hours agoLicense
Unknown
Cross-platform note-taking app with end-to-end encryption, Markdown support, web clipping, and sync via Dropbox, OneDrive, or Joplin Cloud.
Open Source Alternative to:
Privacy-first knowledge base that connects your notes
Stars
45,053Last commit
11 hours agoLicense
AGPL-3.0
Local-first, open-source knowledge management tool with bidirectional linking, outlines, flashcards, PDF annotations, and whiteboards for building a connected second brain.
Open Source Alternative to:
AI second brain for research, automation, and personal agents
Stars
37,491Last commit
2 months agoLicense
AGPL-3.0
Self-hostable AI assistant that connects to your docs and the web, lets you build agents, schedule automations, and run research with verifiable citations.
Open Source Alternative to:
Zero-knowledge encrypted notes that sync across all devices
Stars
14,636Last commit
11 hours agoLicense
GPL-3.0
End-to-end encrypted note-taking app with zero-knowledge architecture, cross-device sync, web clipper, and a self-hostable sync server.
Open Source Alternative to:
AI-Powered Note Taking App
Stars
11,036Last commit
30 days agoLicense
GPL-3.0
The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.
Open Source Alternative to:
Programmable notes with queries, Lua scripting, and wiki links
Stars
6,156Last commit
12 hours agoLicense
MIT
A self-hosted, browser-based note-taking system that turns plain Markdown pages into a queryable, scriptable knowledge base you control.
Open Source Alternative to:
Sent – A unified API for sending messages across SMS, RCS, and apps like WhatsApp.
Sent