Realm

SQLite

sqlite/sqlite

Popular

Serverless, zero-config embedded SQL database in a single file; the most deployed database engine.

DuckDB

duckdb/duckdb

TrendingPopular

In-process analytical SQL database; the SQLite of analytics, querying Parquet, CSV and Iceberg directly.

PGlite

neondatabase/electric-pglite

Trending

Full Postgres compiled to WASM that runs in the browser, Node, Bun and Deno with persistence.

ElectricSQL

electric-sql/electric

Trending (detected automatically)Rising

Postgres sync engine that streams partial data ('shapes') into local apps; pairs with TanStack DB.

Zero

rocicorp/mono

Trending (detected automatically)Rising

Sync engine from Rocicorp that gives instant, query-driven local-first UIs on top of Postgres.

PowerSync

powersync.com

Sync layer that keeps on-device SQLite in sync with Postgres, MongoDB or MySQL backends.

RxDB

pubkey/rxdb

Reactive local-first NoSQL database for JavaScript with pluggable storage and replication.

PouchDB

apache/pouchdb

Legacy

In-browser JavaScript database that syncs with CouchDB; now an Apache project with slower momentum.

Room

developer.android.com

Popular

Android Jetpack's SQLite abstraction with compile-time query checks, now Kotlin Multiplatform-ready.