Ajax with less suck - (and node.js HTTP client to match)
Medium.com WYSIWYG editor clone.
Handlebars provides the power necessary to let you build semantic templates effectively with no frustration. An extension to the Mustache templating language created by Chris Wanstrath.
An extended Bootstrap table with radio, checkbox, sort, pagination, and other added features. (supports twitter bootstrap v2 and v3)
E2E test framework for Angular apps
Simple responsive charts
Chosen is a library for making long, unwieldy select boxes more friendly.
jQuery Validation Plugin