Masonry
Layout elements in a grid, like a mason fitting stones in a wall
jScrollPane
Pretty, customisable, cross browser replacement scrollbars
Fragment.js
A tiny tool for easily loading html fragments and templates
Egjs Infinitegrid
A module used to arrange card elements including content infinitely on a grid layout.
Nested
Gap free multi column grid
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Eqcss
EQCSS is a plugin that introduces Element Queries, Scoped CSS, a Parent selector, and responsive JavaScript to all browsers IE8 and up
Aurora
Hate Cookies? Introducing Aurora, 100% Cookie-Free Open Website Analytics. Collect Anonymous Data. Make your Audience Happy Now!
Dragula
:ok_hand: Drag and drop so simple it hurts
jQuery Evergreen
Small & fast DOM and event library for modern browsers.
Node List.js
NodeList implementation/library - Use the Native DOM APIs as easily as jQuery
Phantomjs
Scriptable Headless WebKit
Cortex
A javascript library for centrally managing data with React
Isotope
An exquisite jQuery plugin for magical layouts. Enables filtering, sorting, and dynamic layouts.
Bespoke.js
DIY Presentation Micro-Framework
Laconic
Sane DOM Generation
Interact.js
Drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers (and also IE8+)