JSHint
JSHint is a community-driven tool to detect errors in JavaScript code and enforce your team's coding conventions.
Wow
Reveal CSS animation as you scroll down a page
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Stencil
A Web Component compiler for building fast, reusable UI components and Progressive Web Apps 💎 Built by the Ionic Framework team
Gpu.js
GPU Accelerated JavaScript
Pdfkit
A JavaScript PDF generation library for Node and the browser
Chai
BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.
Noty
noty - jquery notification plugin
List
Do you want a 3 KB (gzipped&minified) cross-browser native JavaScript that makes your plain HTML lists and tables super flexible, searchable, sortable and filterable? Yeah! Do you also want the possibility to add, edit and remove items by dead simple templating? Hell yeah!
Wavesurfer.js
Navigable waveform built on Web Audio and Canvas
Easel JS
The Easel Javascript library provides a full, hierarchical display list, a core interaction model, and helper classes to make working with the HTML5 Canvas element much easier.
Respond
A fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more)
Robotjs
Node.js Desktop Automation.
Interact.js
Drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers (and also IE8+)
Angular Strap
AngularJS 1.2+ native directives for Bootstrap 3.
Webuploader
It's a new file uploader solution!