Remote-Tilt is a JavaScript library that emulates motion events on either your own device or a mobile emulator.

Remote-tilt is very useful as you can debug on your computer without a mobile device, or even fire up the script on a mobile emulator.

Capturing motion events is rather tricky, and the “emulate slight shake” option helps emulating real-life circumstances like never before.

View the introduction video and take a look at the demos to get an idea of what’s what with this completely fine plugin.

• Website: http://remote-tilt.com

jQ.Mobi is a JavaScript library that focuses on being efficient for mobile devices.

The library has a small footprint (only 3.5kb — compare with 24kb of jQuery) and, although it doesn’t offer anything that new, unit tests show that jQ.Mobi is miles ahead of the competitors in terms of performance.

jQ.Mobi is aimed towards jQuery developers who want to write more efficient apps; thus, the syntax is more or less like that of jQuery.

It ships together with an UI library and some plugins for mobile interfaces and interactions.

• Website: http://www.jqmobi.com/

iUI is a Javascript/CSS/HTML5 framework for developing user interfaces for the iPhone and similar devices (not limited to iOS).

iUI employs “presets” or default styles and themes to minimize coding, and allow creating webapps and websites within no time.

iUI is both a light and powerful navigational framework, aimed to people who don’t need the latest features (id est, JavaScript) for their websites, and want to create simple, yet sexy-looking mobile websites.

• Website: http://code.google.com/p/iui/
• Demo: http://www.iui-js.org/demo

xui.js is a JavaScript DOM library for authoring HTML5 mobile applications.

Those familiar with Russian or other Slavic languages probably secretly wish for xui.js to have a different name.

xui is, however, a worthwhile library for building simpler web applications, as it doesn’t offer many new, high-tech features, but rather focuses on simple, cross-platform supporting buttons-in-a-list approach to application development, as it’s what most applications require either way.

• Website: http://xuijs.com/

Lungo.js is a mobile framework for making iOS/Android/Blackberry and WebOs applications with HTML5, CSS3, and JavaScript.

Lungo.js is a mobile framework; thus, it supports numerous mobile-exclusive events: Swipe, Tap, Double-tap, etc., and uses vector graphics to reduce bandwidth.

To make app development easier, Lungo.js allows using exclusively-HTML5 features, such as WebSQL, Geolocation, History, and others.

Overall, Lungo.js is an all-round solution for mobile development, because it doesn’t focus on one particular platform (*coughs* iOS *coughs*).

• Website: http://www.lungojs.com/

Ripple is a mobile development and testing extension for the Chrome browser.

Ripple supports the following platforms: phonegap, opera, WAC, JIL and Vodafone.

Ripple is easy to use; you need only turn it on when you are at your application’s URL.

The only downside is that you have to have Chrome installed to use Ripple — but then again you probably have it already.

• Website: http://ripple.tinyhippos.com/