Amplify
AmplifyJS is a set of components for data management and application communication.
Sticky Kit
A jQuery plugin for creating smart sticky elements
Serenade.js
Client side MVC framework
Pegasus
Load data while still loading other scripts and display data faster in jQuery, Backbone, Angular, ... apps
Hermes.js
Message and Error logger implementation
Optics
Profunctor implementation of Lenses, Prisms, Traversals, Isos, etc.
Tock
Timer Object/Class. Kickass!
Prime
an OOP javascript library for node.js and the browsers
Jade
Jade - robust, elegant, feature rich template engine for nodejs
Thinkjs
Use full ES2015+ features to develop Node.js applications, Support TypeScript.
Lunr.js
A bit like Solr, but much smaller and not as bright
Sdk Js
Tanker client-side encryption SDK for JavaScript
Cram
Simple AMD and CommonJS module bundler.
jTypes
jTypes is the most comprehensive and robust JavaScript library for overcoming differential inheritance with prototype-based objects. Its lightweight yet powerful design provides web programmers on any platform or browser the ability to emulate classical inheritance where objects are defined by classes.
Use.js
An AMD/RequireJS plugin for consuming incompatible JavaScript files.
Boiler
Boiler is a utility library that makes every day tasks in JavaScript easier by providing over 115 methods that work on arrays, collections, functions, numbers, objects, and strings.
Weld
Template antimatter for Node.js (Browsers too!)