Kora.jsOffline-first application framework

Build apps that work anywhere — online, offline, and everything in between. Zero sync code required.

Offline by Default

Every code path works without a network connection. Connectivity enables sync, not functionality.

Define your schema, build your UI. Kora handles conflict resolution, sync, and storage automatically.

Auto-merge with LWW and CRDTs, declarative constraints, and custom resolvers — from simple to sophisticated.

First-class React hooks with reactive queries, optimistic mutations, and concurrent mode safety.

Inspect operations, trace conflicts, monitor sync status — all from a browser extension.

Full TypeScript inference from your schema to your queries. Your IDE knows your data.