Grunt
Grunt: The JavaScript Task Runner
Velocity
Accelerated JavaScript animation.
UI Router
The de-facto solution to flexible routing with nested views
Signal R
Incredibly simple real-time web for .NET
Mediaelement
HTML5 <audio> or <video> player with Flash and Silverlight shims that mimics the HTML5 MediaElement API, enabling a consistent UI in all browsers.
Scroll Reveal.js
Declarative on-scroll reveal animations.
Scroll Magic
The jQuery plugin for magical scroll interactions.
Konva
Konva.js is an HTML5 Canvas JavaScript framework that extends the 2d context by enabling canvas interactivity for desktop and mobile applications.
Bootstrap Datetimepicker
Date/time picker widget based on twitter bootstrap
Remark
A simple, in-browser, markdown-driven slideshow tool.
Jszip
Create, read and edit .zip files with Javascript
Nprogress
For slim progress bars like on YouTube, Medium, etc
React Toastify
React notification made easy 🚀 !
Robotjs
Node.js Desktop Automation.
Bower
A package manager for the web, created at Twitter
Sigma
An open-source lightweight JavaScript graph drawing library
Skrollr
Stand-alone parallax scrolling library for mobile (Android + iOS) and desktop. No jQuery. Just plain JavaScript (and some love).