Compare
Zipper vs Neon
Zipper The Cellar is sealed-query Postgres: overlay branches like Neon, without opening a database socket. Tenant SQL is parsed on Zipper A and never sent to the host parser.
| Capability | Zipper · The Cellar | Neon |
|---|---|---|
| Caption | World's first sealed Postgres | Serverless Postgres |
| Wire protocol | None — HTTP seals only | Postgres :5432 + pooled HTTP |
| Credentials | Capability seals (role, tables, ops, TTL) | Connection strings / roles |
| Branching | Overlay rows (copy-on-write at the document) | Copy-on-write storage pages |
| SQL safety | Restricted dialect; never reaches host Postgres | Full Postgres in a project |
| Default authz | Fail-closed row policies | Database roles / grants |
| Price unit | US$5/mo workspace · 5 cellars | Compute + storage separately |
| Honest scale | Two VPS nodes, Zipper A query engine | Multi-region storage/compute split |