AMD, CJS and global Window namespaced modules for JavaScript.
Universal Module Definition IE6
Reactive programming with Observables.
Kefir
Request routing after the initial page-load.
PathJS IE7, Firefox 3.6, Chrome 9
DOM manipulation, events, styles, collections, templating, etc.
NiaJS
Assign AJAX actions with HTML attributes.
Intercooler.js
Stream JSON, and get partial objects before it even finished downloading.
Oboe.js
Memcached-like key-value store on top of LocalStorage.
simpleStorage IE8, Firefox 3.5, Chrome 4
Lazy scroll long lists/tables of items.
Clusterize.js IE8
Auto-complete input.
Horsey
Tag tokens input.
Insignia IE7
Slim per-page progress-bar.
nprogress
Morph one HTML element into another.
ramjet
Performant DOM element animation.
VelocityJS
Text range selection and manipulation.
Rangy
JSON patch and diff.
jiff
Packed binary structs.
tiny-binary-format
Arbitrary percision Decimal type numbers.
Decimal.js
Format and manipulate Dates.
MomentJS
Auto-detecting syntax highlighter.
Highlight.js