Impel : Impel takes the pain out of working with HTML5 asynchronous databases.
Statement callbacks? Transaction callbacks? One-to-many and many-to-many relati...
Parsley.js : Javascript forms validation.
Powerful, UX aware & Dead simple.
stream.js : stream.js is a tiny stand-alone Javascript library that unlocks a new data structure for you: streams.
jQuery Masonry : A dynamic layout plugin for jQuery
The flip-side of CSS floats
Autotrack : Automatic and enhanced Google Analytics tracking for common user interactions on the web.
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.