{
  "slug": "zero",
  "name": "Zero (Rocicorp)",
  "url": "https://zero.rocicorp.dev",
  "cat": "backend",
  "group": "back",
  "tagline": "Postgres sync engine for local-first",
  "price": "Open source and self-hostable for free. Cloud Zero: Hobby $30/mo, Professional $300/mo, BYOC from $1,000/mo plus your own AWS costs.",
  "tier": "mixed",
  "pick": false,
  "what": "A general-purpose sync engine that keeps a queryable client-side replica in sync with an ordinary Postgres database, so UI reads are instant and offline works by default. It reached a stable 1.0 in June 2026. Runs as <code>zero-cache</code> alongside your own API servers.",
  "why": "Gets you the instant, no-spinner feel of Linear without hand-writing cache invalidation, and it sits on plain Postgres you already own. Used in production by tldraw, Tines and Productlane.",
  "warn": "<b>Not a managed backend</b> — you still need Postgres with logical replication, a zero-cache server and your own API endpoints. The cheapest hosted tier is $30/mo, and this is the most operationally demanding option on this list.",
  "category": {
    "key": "backend",
    "name": "Databases & backend",
    "desc": "Where your data lives. Free-tier pausing behaviour is the field to read.",
    "group": "back",
    "groupName": "Give it a backend"
  },
  "freshness": null,
  "health": {
    "ok": true,
    "status_code": 200,
    "final_url": "https://zero.rocicorp.dev/",
    "checked_at": "2026-08-18T22:10:46.578+00:00"
  },
  "corrected_at": null,
  "upstream_changed_at": null
}