Here are links and references to interesting frameworks and libraries that might help you with cross-platform portability issues for apps on mobile devices.

• Lists of Frameworks
• Multiple phone web-based application frameworks
• List of rich Internet application frameworks
• A list from SonyEricsson

• My favorite JavaScript IDE
• WebStorm

• Books
• Building Android Apps with HTML, CSS, and JavaScript by Jonathan Stark
• Building iPhone Apps with HTML, CSS, and JavaScript by Jonathan Stark

• Sencha Touch
• Home
• Documentation

• PhoneGap (For running JavaScript code as native apps on mobile devices)
• Supported Features
• API Reference
• PhoneGap:Build (cloud-based)

• Adobe AIR (For running JavaScript code as native apps on desktop computers)
• Adobe AIR Developer Center
• Adobe AIR API Reference for HTML Developers
• Adobe AIR for Android
• Adobe AIR for iOS

• Appcelerator’s Titanium (cloud-based)
• Developer Center
• Documentation Center

• RhoMobile’s Rhodes (uses Ruby)
• Device Capabilities
• Docs
• Rhodes API Reference

• AppMobi (cloud-based)
• Dev Center
• Documentation
• Javascript API Reference

• Unity 3 (game oriented)
• Resources
• Documentation

• jQuery Mobile Framework
• Home
• Platforms
• Docs & Demos

• jQTouch
• Home

• Jo
• Home
• Documentation

• iScroll
• Home
• Google Group