Core framework: Montage simplifies the development of rich HTML5 applications by providing modular components, real-time two-way data binding, CommonJS dependency management, and many more conveniences. Join us on irc.freenode.net#montage or https://groups.google.com/d/forum/montagejs
A light-weight but powerful templating engine, highly extensible, without DOM or jQuery dependency.
Very lightweight progress bars. No jQuery
A minimal AMD API implementation for use after optimized builds
A small, fast module and resource loader with dependency management. (AMD, CommonJS Modules/1.1, CSS, HTML, etc.)
filter arrays using mongodb queries
A layout and template manager for Backbone.js applications.
Light weight templates for react
A simple, modern, browser notification system
Easy communication between cross-origin browser tabs
Webshims Lib is a modular capability-based polyfill-loading library
An in memory postgres DB instance for your unit tests
jStorage is a simple key/value database to store data on browser side. As a bonus it is also a local pubsub platform to sync data between tabs/windows