Open Source Note Taking & Knowledge Management Tools Projects
Apps for capturing notes, organizing information, and building personal knowledge systems and second brains.
View best note taking & knowledge management tools ranked by popularityJotty
Lightweight self-hosted app for managing personal file-based notes and checklists.
memos
A modern, open-source, self-hosted knowledge management and note-taking platform designed for privacy-conscious users and organizations.
Obsidian
AFFiNE
Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.
SilverBullet
Markdown-based note-taking app with powerful live queries, templates, and a pluggable scripting system for power users.
Speakr
Self-hosted AI transcription and intelligent note-taking platform that turns audio recordings into organized, searchable notes with speaker identification.
Otter.ai
NoteDiscovery
A self-hosted knowledge base for note-taking with markdown support, Zettelkasten methodology, and Docker deployment.
HedgeDoc
Real-time collaborative markdown note editor you can self-host — write together with rich formatting and seamless sharing.
Google Docs
TriliumNext Notes
Hierarchical personal knowledge base with powerful note-taking, rich text editing, and scripting capabilities.
kuku
Open-source local-first Markdown workspace for macOS with wiki, AI editing, and encrypted sync.
Obsidian
Atomic
A self-hosted personal knowledge base that turns markdown notes into an AI-augmented knowledge graph with semantic search and wiki synthesis.
Pinboard
Journal
A simple self-hosted journal and blog API written in Go, using SQLite for storage.
Day One
Files.md
A simple local-first note-taking app for your plain .md files with Telegram bot access.
Joplin
Privacy-focused, open-source note-taking and to-do app with end-to-end encryption and multi-device sync.