Open Source Note-Taking Tools
A curated collection of the best open source apps for capturing and organizing notes, from plain-text and markdown editors to linked notebooks that sync across devices..
Self-hosted timeline for quick notes, logs, and snippets
Stars
64,358Last commit
11 hours agoLicense
MIT
Memos is a self-hosted, open-source note-taking app built around a private timeline. Write in Markdown, skip the folder setup, and keep your data on your own server.
Open Source Alternative to:
Encrypted note-taking that syncs across all your devices
Stars
57,109Last commit
13 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 management with block-level linking
Stars
47,140Last commit
5 hours agoLicense
AGPL-3.0
Personal knowledge management system with WYSIWYG block editing, bidirectional links, spaced repetition flashcards, a relational database, and end-to-end encrypted sync.
Open Source Alternative to:
Privacy-first knowledge base that connects your notes
Stars
45,527Last commit
4 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:
Local-first, Git-native personal knowledge base with AI
Stars
20,479Last commit
3 days agoLicense
AGPL-3.0
A free, open source note-taking app built on plain Markdown files, Git version control, and direct AI model integration. No account required.
Open Source Alternative to:
Zero-knowledge encrypted notes that sync across all devices
Stars
14,903Last commit
5 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
11,180Last commit
4 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:
Private meeting notes, no bots, files you own
Stars
Stars growing over the last 30 days9,828Last commit
3 days agoLicense
MIT
Records system audio without joining your call, then turns rough notes into editable summaries. Audio, transcripts, and notes stay as local files.
Open Source Alternative to:
Private workspace for notes, tasks, and databases
Stars
9,063Last commit
6 days agoLicense
Unknown
A local-first, encrypted workspace for notes, tasks, databases, and chats. Your data stays on your device, syncs peer-to-peer, and never passes through a central server.
Open Source Alternative to:
Programmable notes with queries, Lua scripting, and wiki links
Stars
Stars growing over the last 30 days6,494Last commit
20 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:
Secure, encrypted notes for your digital life
Stars
6,709Last commit
5 days agoLicense
AGPL-3.0
Cross-platform note-taking app with end-to-end encryption, offline access, and powerful organization features for privacy-conscious users.
Open Source Alternative to:
Local-first notes app with no cloud, no AI, no tracking
Stars
1,366Last commit
23 days agoLicense
MIT
A privacy-focused, offline-first note-taking app that stores everything on your device, with Markdown, note linking, file attachments, LaTeX math, and bring-your-own sync.
Open Source Alternative to:
Clean, distraction-free note-taking with local storage
Stars
1,195Last commit
15 days agoLicense
AGPL-3.0
Minimal note-taking app storing Markdown notes in local SQLite database. Features instant search, flexible tagging, keyboard shortcuts, and offline access.
Open Source Alternative to:
Distraction-free note-taking with powerful features
Stars
320Last commit
25 days agoLicense
AGPL-3.0
A customizable, offline-first note editor that lets you format text, create lists, add images, and export to HTML - all while maintaining your privacy.
Open Source Alternative to:
Fast, secure, and free personal note-taking app
Stars
179Last commit
3 months agoLicense
Unknown
OpenNotas is a multi-platform, end-to-end encrypted note-taking app that offers simplicity, synchronization, and offline functionality.
Open Source Alternative to:
Self-hosted sticky notes with better organization
Stars
46Last commit
10 days agoLicense
MIT
A self-hosted, open-source note-taking app that keeps the Google Keep sticky-note feel while adding folders, timelines, list views, and import support.
Open Source Alternative to:
Privacy-focused note-taking made simple and fast
Stars
67Last commit
9 months agoLicense
GPL-2.0
Justnote is a secure note-taking app that lets you easily create and sync notes across devices while maintaining full control of your data.
Open Source Alternative to:
Local-first workspace that runs AI agents on your documents
Stars
35Last commit
1 day agoLicense
MPL-2.0
Write, organize, and run AI agents in a private workspace that stores everything locally, syncs peer-to-peer, and works offline on Windows, macOS, and Linux.
Open Source Alternative to:
Bright Data – Web data for AI agents and apps. Built-in unblocking, proxies, and ready-made APIs.
Docmost
InfluxDB