Open Source Note-Taking Tools using Kotlin
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. using Kotlin.
Encrypted note-taking that syncs across all your devices
Stars
56,065Last commit
9 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
44,574Last commit
10 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:
Zero-knowledge encrypted notes that sync across all devices
Stars
14,455Last commit
3 days 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
10,939Last commit
21 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:
Secure, encrypted notes for your digital life
Stars
6,598Last 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:
Privacy-focused note-taking made simple and fast
Stars
67Last commit
7 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:
c15t – Open-source cookie banner, built for control and lightening fast modern web apps.
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