TraceKit : Not all browsers support stack traces on error objects, but TraceKit squeezes out as much useful information as possible and normalizes it.
store.js : localStorage wrapper for all browsers without using cookies or flash. Uses localStorage, globalStorage, and userData behavior under the hood.
Frappe Charts : GitHub-inspired simple and modern charts for the web with zero dependencies.
Web Forms : Web Forms 2.0 Cross-Browser Implementation
howler.js : howler.js is an audio library for the modern web. It defaults to Web Audio API and falls back to HTML5 Audio.
Automatic and enhanced Google Analytics tracking for common user interactions on the web.