- Website
- zero.rocicorp.dev
About Zero
Zero is a general-purpose sync for the web designed to deliver instant client-first reads and writes by syncing only the data users actually access. It’s built for web apps with large datasets and complex permissions, helping developers ship fast, responsive experiences without preloading the whole database.
Key Features
Zero tackles the challenge of building data-heavy apps by keeping a client-side store and streaming server results, so interactions feel instant. Developers wire queries to UI and rely on automatic background sync to keep local results up to date, without writing HTTP APIs:
Instant Reads
Client-first reads return matching local data immediately, often on the first render.
Instant Writes
Mutations update all open queries instantly on the client; server changes propagate without extra polling.
Automatic Reactivity
Queries update automatically when server data changes, including updates from other clients.
Easy Integration
Works with normal Postgres databases, schemas, and libraries; no special APIs required.
Summary
Best for frontend teams building AI-assisted apps, dashboards with large datasets, and internal tools needing precise permission controls.
