Impel : Impel takes the pain out of working with HTML5 asynchronous databases.
Statement callbacks? Transaction callbacks? One-to-many and many-to-many relati...
CouchDB : Apache CouchDB™ is a database
that uses JSON for documents,
JavaScript for MapReduce indexes,
and regular HTTP for its API
Crafty : JavaScript Game Engine, HTML5 Game Engine
loglevel : Minimal lightweight logging for JavaScript, adding reliable log level methods to wrap any available console.log methods
ActiveJS is a JavaScript application framework that provides local and REST based data modeling and pure DOM view construction with back button and history support.