Isometric
JSIso - An HTML5 Canvas Tile Engine
Gamejs
GameJs is a thin library on top of the HTML canvas element. In addition to the drawing functions it has a set of generally helpful modules for game development.
jScrollPane
Pretty, customisable, cross browser replacement scrollbars
jQuery Impromptu
An extention to help provide a more pleasant way to spontaneously prompt a user for input.
Tempo
Tempo is an easy, intuitive JavaScript rendering engine that enables you to craft data templates in pure HTML.
Sortable
Sortable — is a minimalist JavaScript library for reorderable drag-and-drop lists on modern browsers and touch devices. No jQuery. Supports Meteor, AngularJS, React and any CSS library, e.g. Bootstrap.
Officegen
Standalone Office Open XML files (Microsoft Office 2007 and later) generator for Word (docx), PowerPoint (pptx) and Excell (xlsx) in javascript. The output is a stream.
Nerdamer
a symbolic math expression evaluator for javascript
LScache
A localStorage-based memcache-inspired client-side caching library.
Formbuilder
[Needs Maintainer] Formbuilder is a small graphical interface for letting users build their own webforms.
Element Transitions.js
Simple transitions for web pages
Mqtt.js
The MQTT client for Node.js and the browser
jQuery Resizable Columns
Resizable table columns for jQuery.
Zest
An absurdly fast CSS selector engine.
Progression.js
A jQuery plugin that gives users real time hints & progress updates as they complete forms
Metismenu
A jQuery menu plugin
Math Box.js
MathBox is a (work in progress) library for making presentation-quality math diagrams in WebGL.