Gator
Event delegation in Javascript
Enquire.js
Awesome Media Queries in JavaScript
State
Hierarchical finite state machine for TypeScript and JavaScript
Rye
A modern, lightweight browser library using ES5 natives
Dragula
:ok_hand: Drag and drop so simple it hurts
Fastdom
Eliminates layout thrashing by batching DOM read/write operations
Jquery Waypoints
Waypoints is a small jQuery plugin that makes it easy to execute a function whenever you scroll to an element.
Domready
let's you know when the dom is ready
Is Near
Calculates if the mouse position is near to a given element.
Keyboard Js
A JavaScript library for binding keyboard combos without the pain of key codes and key combo conflicts.
Js Coroutines
60fps with Javascript Coroutines for idle processing and animation
Double
jQuery plugin for hiring doubles
Persist State
jQuery Ui widget that will transparently save the state of checkboxes, inputs, selects, etc in localStorage, restoring these on the user's next visit to the page.
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Elements
E+lements is a minimal DOM Library for the prime framework.
Kimbo.js
An ECMAScript 5 only-compatible JavaScript library.
Tippyjs
Highly customizable vanilla JS tooltip/popover library