The local-first database that runs on every JS runtime and replicates with your existing backend - no vendor, no lock-in - https://rxdb.info/

Simple and fast JSON database

An open source cybersecurity protocol for syncing decentralized graph data.

Database inspired by Apache CouchDB that is designed to run well within the browser.

Embeddable Postgres with real-time, reactive bindings.

A javascript library to run SQLite on the web.

Peer-to-Peer Databases for the Decentralized Web

The fastest and simplest library for SQLite3 in Node.js.

JavaScript SQL database for browser and Node.js. Handles both traditional relational tables and nested JSON data (NoSQL). Export, store, and import data from localStorage, IndexedDB, or Excel

Realtime database backend based on Operational Transformation (OT)

Next-generation state management framework based on reactive SQLite and built-in sync engine.

A super-simple-small promise-based keyval store implemented with IndexedDB

Simple key-value storage with support for multiple backends

An async Key-Value storage API with conventional features like multi driver mounting, watching and working with metadata, dozens of built-in drivers and a tiny core

WebAssembly version of DuckDB

WebAssembly SQLite with support for browser storage extensions

Mongo but on Postgres and with strong consistency benefits

SQLocal makes it easy to run SQLite3 in the browser, backed by the origin private file system.

SignalDB is a reactive, local-first JavaScript database designed for modern web applications. It combines signal-based reactivity with powerful local data management and real-time synchronization capabilities.

Turn markdown files into structured, queryable data (SQL and JSON). Build rich markdown-powered sites fast and reliably.

A local-first relational database for the browser, React Native and your backend.