Workbox : JavaScript Libraries for adding offline support to web apps.
DOM Storage Query Language : DOM Storage Query Language (DomSQL) is an SQL inspired interface for DOM Storage (or Web Storage as defined in the W3C working draft).
sw-toolbox : A collection of service worker tools for offlining runtime requests
PouchDB : PouchDB is an open-source JavaScript database inspired by Apache CouchDB that is designed to run well within the browser.
PouchDB was created to help ...
sw-precache : Service Worker Precache is a module for generating a service worker that precaches resources. The module can be used in JavaScript-based build scripts...
PouchDB is a JavaScript library that allows you to store and query data for web applications that need to work offline, and sync with an online database when you are online.