Inferno
An extremely fast, React-like JavaScript library for building modern user interfaces
Java Script Load Image
JavaScript Load Image is a library to load images provided as File or Blob objects or via URL. It returns an optionally scaled and/or cropped HTML img or canvas element. It also provides a method to parse image meta data to extract Exif tags and thumbnails and to restore the complete image header after resizing.
Canjs
Can do JS, better, faster, easier.
Redux Loop
A port of elm-effects and the Elm Architecture to Redux that allows you to sequence your effects naturally and purely by returning them from your reducers.
Mjml
MJML: the only framework that makes responsive-email easy
UA Parser
Lightweight JavaScript-based User-Agent string parser. Supports browser & node.js environment. Also available as jQuery plugin.
Fast Memoize.js
:rabbit: Fastest possible memoization library
Montage
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
Cycle Core
A fully reactive JavaScript framework for Human-Computer Interaction
Raven Js
JavaScript client for Sentry
Bootstrap.native
If you are looking for Bootstrap without jQuery or vanilla Javascript for Bootstrap, this is the place to get started.
Sentry
Sentry is a realtime error logging and aggregation platform
Lodash
An alternative to Underscore.js, delivering consistency, customization, performance, and extra features.
Almond
A minimal AMD API implementation for use after optimized builds
Hinclude
declarative client-side inclusion for the Web
Loglevel
Minimal lightweight logging for JavaScript, adding reliable log level methods to wrap any available console.log methods