ForerunnerDB - ForerunnerDB is the only JavaScript database with a simple, rich JSON-based query language.
PouchDB - Open-source JavaScript database inspired by Apache CouchDB that's designed to run well within the browser
Alasql - Alasql.js - is a lightweight client-side in-memory SQL database designed to work in browser and...
Underscore.js - Underscore is a utility-belt library for JavaScript that provides a lot of the functional...
IndexedDB - IndexedDB is a low-level API for client-side storage of significant amounts of structured data, including files/blobs.
RxDB - A fast, offline-first, reactive Database for JavaScript Applications