Earthstar is a specification and JavaScript library for building connected applications owned and run by their users.

Works offline. Store music, photos, video. Actually delete stuff. Temporary documents. Live syncing. Use one or many identities. Sneakernets. Always self-hosted. Servers optional. No blockchain. No tokens. Free forever, in every sense.

Verification with ed25519. Works in the browser. Grant read-only access. Efficient sync. Streaming sync. One identity across many devices. Multiwriter. torage drivers. Document write permissions. Deno.Node.