Use.js
An AMD/RequireJS plugin for consuming incompatible JavaScript files.
Lazysizes
High performance and SEO friendly lazy loader for images (responsive and normal), iframes and more, that detects any visibility changes triggered through user interaction, CSS or JavaScript without configuration.
Stately.js
Stately.js is a JavaScript based finite-state machine (FSM) engine for Node.js and the browser.
Grips
Simple-logic templates
Stapes
a (really) tiny Javascript MVC microframework
Handlebars.js
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.
Ink
An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping
Grapnel.js
A simple, lightweight library making it easy to create routes or run events based on a specific URL hashtag.
Black Hole.js
Renders black hole gravitational lensing effects in an image canvas using WebGL, glfx.js, and numeric.js
jStorage
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
Supermodel
Supermodel - Minimal Model Tracking for Backbonejs
Sammy
Sammy is a tiny javascript framework built on top of jQuery, It's RESTful Evented Javascript.
Durandal
A cross-device, cross-platform client framework written in JavaScript and designed to make building Single Page Applications (SPAs) easy to create and maintain.
Keymaster
A simple micro-library for defining and dispatching keyboard shortcuts. It has no dependencies.
LABjs
Loading And Blocking JavaScript: On-demand parallel loader for JavaScript with execution order dependencies
Refraction
A guard that represents a central point of control in your application
Serenade.js
Client side MVC framework