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.
Scrob Master
Master your scroll events.
Masonry
Layout elements in a grid, like a mason fitting stones in a wall
Kimbo.js
An ECMAScript 5 only-compatible JavaScript library.
Isotope
An exquisite jQuery plugin for magical layouts. Enables filtering, sorting, and dynamic layouts.
Fragment.js
A tiny tool for easily loading html fragments and templates
Atom
Atom javascript framewok
Voyeur.js
Voyeur is a tiny (1.2kb) Javascript library that lets you traverse and manipulate the DOM the way it should have been.
Is Near
Calculates if the mouse position is near to a given element.
Tire
Tire is a lightweight JavaScript library for modern browsers
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Double
jQuery plugin for hiring doubles
Rye
A modern, lightweight browser library using ES5 natives
Minified.js
Replace jQuery or MooTools with a <4kB Library
Responsive Comments
A client-side solution to conditional loading.
Prototype
Prototype JavaScript framework
Packery
bin-packing layout library