Smoothie
Smoothie Charts: smooooooth JavaScript charts for realtime streaming data
Messenger
Growl-style alerts and messages for your app. #hubspot-open-source
Backbone Layout Manager
A layout and template manager for Backbone.js applications.
Alertify.js
JavaScript Alert/Notification System
Hogan.js
A compiler for the Mustache templating language
jQuery IME
jQuery based input methods library
Walkway
An easy way to animate SVG elements.
Dimple
An object-oriented API for business analytics
Lucia
🙋♀️ 3kb library for tiny web apps
Sysend.js
Web application synchronization between different tabs
Mqtt.js
The MQTT client for Node.js and the browser
Headstart
An automated front-end setup
Arbor
A graph visualization library using web workers and jQuery
Popmotion
A 12kb Javascript motion engine. Use for animation, physics and input tracking.
Assemble
Static site generator for Node.js, Grunt.js, and Yeoman (and soon, Gulp), using the Handlebars template engine. Used by Zurb Foundation, Zurb Ink, H5BP/Effeckt, Less.js / lesscss.org, Topcoat, Web Experience Toolkit, and hundreds of other projects to build sites, themes, components, documentation, blogs and gh-pages. Pull requests welcome, stars appreciated!
Alpha Tab
alphaTab is a cross platform music notation and guitar tablature rendering library.
JsRender
A light-weight but powerful templating engine, highly extensible, without DOM or jQuery dependency.