Jquery Sieve
Sieve is a jQuery plugin allows you to quickly add an interactive search filter to any block of content.
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
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
jQuery.lazy
A lightweight, fast, feature-rich, powerful and highly configurable delayed content, image and background lazy loading plugin for jQuery & Zepto.
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.
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Double
jQuery plugin for hiring doubles
Responsive Comments
A client-side solution to conditional loading.
Packery
bin-packing layout library
React Virtualized
React components for efficiently rendering large lists and tabular data
Gator
Event delegation in Javascript
Tippyjs
Highly customizable vanilla JS tooltip/popover library
Node List.js
NodeList implementation/library - Use the Native DOM APIs as easily as jQuery