A tool for analyzing JavaScript code in Titanium Mobile projects. It provide a wide variety of useful functionality: runtime error detection, Titanium API deprecation warnings, platform specific API validation, etc.
http://www.exceptionhub.com/
This link is now broken.
about:
* Logs all JavaScript errors (local or remote)
* Provides a stack trace to find the cause in all browsers
* Groups errors by cause
* Development and Production modes
* RSS feeds for errors