Simple and fast JSON database

Flexible, open source continuous integration server written in node.js

Universal database contract for applications and agents.

SyncProxy javascript client with support for all major embedded databases (IndexedDB, SQLite, WebSQL, LokiJS...)

Git for Agent Memory: Copy-On-Write vector branching for embedded multi-agent memory (83x faster, 3000x smaller snapshots)

Embedded PostgreSQL 18 server with true concurrent connections - zero config, auto-provision databases

A 'wee' and simple embedded JSON database built on `lowdb` with some traditional query benefits/syntax

JexiDB is a pure JS NPM library for managing data on disk efficiently, without the need for a server.

JavaScript wrapper for SQLite compiled to JavaScript with Emscripten SDK.

local JSON Database for Node.js, inspired by Mongoose

Simple to use local JSON database

Embedded PostgreSQL with pgvector extension for Node.js applications

A universal, content-addressed, versioned store: one interface that's a filesystem, a git-style version history, and a queryable SQL + vector database — packable into a single file, syncable, and AI-native via MCP. Rust core with Node, JVM, C/C++, and WASM bindings.

A simple queryable embedded database designed for front-end that wraps IndexedDB.

Zero-dependency vanilla JS document database in one file. MongoDB-style queries, indices, joins, aggregation, full-text search, graph traversal, field encryption, and JWT auth.

Popular NodeJS Libraries for Developing Data-Driven AI Applications and Sample Codes

ESMapDB is an embedded database for Node.js with an ECMAScript Map interface. We believe in an open Internet of Things.

Quickly stand up an easy-to-use backend REST API to speed up your frontend development

Fast, minimal and modern NeDB ODM for Node.

A lightweight BSON-based, document-oriented database for Javascript — built for speed, simplicity, and happiness.