PowerSync vs Zero (Rocicorp)
PowerSync: Sync engine that keeps on-device SQLite in sync with Postgres, MongoDB, MySQL or SQL Server. Zero (Rocicorp): Query-driven sync engine: clients run ZQL locally against a Postgres-backed cache for instant UIs.
key differences
- Licensing: PowerSync is source-available (FSL-1.1-ALv2 (service); Apache-2.0 client SDKs); Zero (Rocicorp) is open source (permissive) (Apache License 2.0).
- Horizontal scaling is native in PowerSync and manual in Zero (Rocicorp).
- Only PowerSync has secondary indexes, json, encryption at rest, offline sync, runs in webassembly.
- PowerSync can run embedded in your application process.
choose powersync for
- +Offline-first field-service and inspection apps
- +Migrating off Realm/Atlas Device Sync
- +Flutter and React Native apps on a Postgres or MongoDB backend
- +Local-first web apps with SQLite in the browser
best at · Mobile/offline, Local-first, Embedded
choose rocicorp-zero for
- +Highly interactive SaaS web apps (issue trackers, editors, dashboards)
- +Adding instant UI updates over an existing Postgres schema
- +Replacing Replicache in existing apps
best at · Local-first, OLTP
PowerSync vs Zero (Rocicorp): FAQ
What is the difference between PowerSync and Zero (Rocicorp)?
PowerSync: Sync engine that keeps on-device SQLite in sync with Postgres, MongoDB, MySQL or SQL Server. Zero (Rocicorp): Query-driven sync engine: clients run ZQL locally against a Postgres-backed cache for instant UIs. Licensing: PowerSync is source-available (FSL-1.1-ALv2 (service); Apache-2.0 client SDKs); Zero (Rocicorp) is open source (permissive) (Apache License 2.0). Horizontal scaling is native in PowerSync and manual in Zero (Rocicorp). Only PowerSync has secondary indexes, json, encryption at rest, offline sync, runs in webassembly.
When should I choose PowerSync over Zero (Rocicorp)?
Choose PowerSync for offline-first field-service and inspection apps; migrating off Realm/Atlas Device Sync; and flutter and React Native apps on a Postgres or MongoDB backend. Choose Zero (Rocicorp) for highly interactive SaaS web apps (issue trackers, editors, dashboards); adding instant UI updates over an existing Postgres schema; and replacing Replicache in existing apps.
Is PowerSync or Zero (Rocicorp) more popular?
PowerSync ranks #129 on the WhichDB Score (23.3/100) and Zero (Rocicorp) ranks #149 (20.8/100). Popularity is not fit: check the requirements that matter for your project.
Are PowerSync and Zero (Rocicorp) open source?
Not in the OSI sense. PowerSync is source-available: you can read the code, but the license restricts some uses, typically offering it as a competing managed service. License: FSL-1.1-ALv2 (service); Apache-2.0 client SDKs. Yes. Zero (Rocicorp) is open source. License: Apache License 2.0.