Stacktrace.js
Framework-agnostic, micro-library for getting stack traces in all web browsers
Grunt
Grunt: The JavaScript Task Runner
Embed.js
A jQuery plugin that analyses the string and automatically embeds emojis, media, maps, tweets, code and services.
Jstree
jquery tree plugin
React Bootstrap
Bootstrap 3 components built with React
Fast Check
Property based testing framework for JavaScript (like QuickCheck) written in TypeScript
Browser Sync
Keep multiple browsers & devices in sync when building websites. http://browsersync.io
Assemble
Static site generator for Node.js, Grunt.js, and Yeoman (and soon, Gulp), using the Handlebars template engine. Used by Zurb Foundation, Zurb Ink, H5BP/Effeckt, Less.js / lesscss.org, Topcoat, Web Experience Toolkit, and hundreds of other projects to build sites, themes, components, documentation, blogs and gh-pages. Pull requests welcome, stars appreciated!
Yepnope.js
An Asynchronous Conditional Resource Loader
No Ui Slider
noUiSlider is a lightweight JavaScript range slider library. It offers a wide selection of options and settings, and is compatible with a ton of (touch) devices, including those running iOS, Android, Windows 8 and Windows Phone 8.
Express
Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple
Fattable
Javascript Library to create scrollable table with infinite rows and columns.
Darken
🌑 Dark mode made easy
Open Location Code
Open Location Codes are short, generated codes that can be used like street addresses, for places where street addresses don't exist.
Benchmark.js
A benchmarking library that works on nearly all JavaScript platforms, supports high-resolution timers, and returns statistically significant results. As used on jsPerf.com.
Hogan.js
A compiler for the Mustache templating language
Responsive Elements
Responsive elements makes it possible for any element to adapt and respond to the area they occupy. It's a tiny javascript library that you can drop into your projects today.