# evoluhq/evolu

TypeScript library and local-first platform

Repository: https://github.com/evoluhq/evolu
Canonical: https://ross.abutalabs.com/products/evolu
Homepage: https://evolu.dev
Language: TypeScript
License: MIT
License Family: permissive
Topics: crdt, local-first, react, react-native, offline-first, sqlite3
Last push: 2026-08-26T20:05:45+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 1438, "days_push": 7, "days_rel": 7, "gap_med": 0.0, "n_releases_24m": 107}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1884, forks 72 (observed 2026-08-28T04:05:48.867388+00:00)

## What it is
Evolu is a TypeScript library and local-first platform for building apps where users own their data, built on SQLite with CRDT-based sync and end-to-end encrypted backup. It includes a tree-shakable standard library (Result types, structured concurrency, runtime types) and React hooks for reactive local-first queries.

## Use cases
- build a local-first app with offline support and online sync
- sync SQLite data between devices with CRDT conflict resolution
- add end-to-end encrypted backup to a React or React Native app
- store user data locally without a backend or vendor lock-in
- use reactive SQL queries with React Suspense
- self-host a relay server for app data sync
- write type-safe SQL with a typed database schema in TypeScript
- use Result types and structured concurrency in idiomatic TypeScript

## When to choose
- you want offline-first apps with automatic sync and no backend to maintain
- you need end-to-end encrypted, user-owned data with no vendor lock-in
- you build with React, React Native, Svelte, Vue, or Solid and want reactive SQLite queries
- you want a batteries-included TypeScript standard library with typed errors

## When to avoid
- you need a traditional server-authoritative database with multi-user concurrent writes to shared records
- your app requires complex server-side queries or reporting over centralized data
- you need a mature battle-tested sync engine at large enterprise scale
- you are not using TypeScript or a supported frontend framework

## Facets
- artifact type: library
- maturity: active
- function: database, orm, caching, sdk, state-management
- domain: web-development, frontend, mobile-development, databases, developer-tools, privacy
- platform: cross-platform, browser
- tags: local-first, crdt, sqlite, e2e-encryption, offline-first, react-hooks, react-suspense, typed-sql, kysely, self-hostable-relay, typescript-library, structured-concurrency, result-types, nodejs, web-server, react-native, electron

## Member repositories
- evoluhq/evolu (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:48.867388+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:13:38.945899+00:00, confidence not recorded.
  - readme: https://github.com/evoluhq/evolu (fetched 2026-08-28T04:05:48.867388+00:00, sha 44f092242140)
  - homepage: https://evolu.dev (fetched 2026-08-29T10:53:06.802302+00:00, sha aded5a583eeb)
  - site_page: https://www.evolu.dev/docs (fetched 2026-08-29T10:53:06.811286+00:00, sha 94c93eed0165)
  - registry_npm: https://registry.npmjs.org/evolu (fetched 2026-08-29T10:53:06.813029+00:00, sha be22637fd397)
- Data as of 2026-08-30T08:39:29.467469+00:00.