Underscore
JavaScript's utility _ belt
Sherlock
Natural-language event parser for Javascript
Onfire.js
onfire.js is a simple events dispatcher subscribe / publish library (< 1kb). async, simple and usefull.
Jailed
Jailed - execute untrusted code with custom permissions
Supermodel
Supermodel - Minimal Model Tracking for Backbonejs
Twitterlib
Twitter JavaScript API library
Min Pub Sub
198 byte publish/subscribe messaging micro-framework
Then.js
The fastest, smallest, fully compatible, full-featured asynchronous module!
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.
Async
Async utilities for node and the browser
Q
A tool for making and composing asynchronous promises in JavaScript
Conditioner
Frizz Free, Environment-aware, JavaScript Modules
Sentry
Sentry is a realtime error logging and aggregation platform
Functional Js
A functional js library that facilitates currying and point-free / tacit programming
Davis.js
RESTful degradable JavaScript routing using pushState
Mousetrap
Simple library for handling keyboard shortcuts in Javascript
Diagram
JS tool for making node graphs. Inspired by dependency graph