Lumen is a free, open-source note-taking app based on the Zettelkasten Method.

Open Lumen →

Think of Lumen as your private knowledge garden. It’s where you plant, grow, and harvest ideas.

🌱 Plant

Write notes with markdown and store them as plain text files in a GitHub repository of your choice. You own your data. Forever.

🌿 Grow

Connect your notes with links and tags. Lumen makes it easy to explore your knowledge graph and discover new connections.

🌻 Harvest

Access your notes from anywhere—even offline. Use Lumen’s flexible query language to find exactly what you’re looking for.

Notes in Lumen are…


⚠️ Warning: Work in progress. Expect breaking changes. Follow Lumen on Twitter for updates.

Link Status
App Netlify Status
Storybook Netlify Status