jQuery Shuffle Plugin
Layout elements in a grid, like a mason fitting stones in a wall
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Eliminates layout thrashing by batching DOM read/write operations
NodeList implementation/library - Use the Native DOM APIs as easily as jQuery
let's you know when the dom is ready
A lightweight, fast, feature-rich, powerful and highly configurable delayed content, image and background lazy loading plugin for jQuery & Zepto.
bind.js - simple two way data binding to HTML and callbacks
Drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers (and also IE8+)
Waypoints is a small jQuery plugin that makes it easy to execute a function whenever you scroll to an element.
nicescroll plugin for jquery - scrollbars like iphone/ipad
Sieve is a jQuery plugin allows you to quickly add an interactive search filter to any block of content.
MooTools Core Repository
An exquisite jQuery plugin for magical layouts. Enables filtering, sorting, and dynamic layouts.