Your notes. Your device. Your rules.
Anchor is a local-first note-taking app. Every keystroke is saved to your browser instantly. Works offline. Syncs live between tabs. No cloud required.
Offline by Default
Your notes live in your browser, not on a server. Close your laptop, lose your connection — your work is always there.
Conflict-Free Merges
Edit the same note in two tabs at once. Yjs, a CRDT, merges every change automatically, so neither edit is lost.
Real-Time Collaboration
Open the same note in two tabs. Type in both. Watch the magic. Every keystroke syncs between tabs instantly, with no server.
How it works
Write
Open Anchor and start typing. Saved instantly.
Go offline
Keep working. Everything persists locally.
Come back
Reload, close the tab, come back: it is all still there.
Built with Yjs (CRDTs), IndexedDB, Tiptap, and the BroadcastChannel API. Every architectural decision prioritizes your data ownership.