I have recently been working on a new tool for use with PhoneGap called ConfiGAP. It is an application designed to help you create the config.xml files used by PhoneGAP Build. If you have ever used PhoneGap Build, you know that creating the config.xml file can be a chore. ConfiGAP is built to make it a bit easier.
The application is almost ready for its first public release. If you are interested in trying it out, email me at firstname.lastname@example.org, and we will let you know once it is ready. There are some early engineering screens of the application here: http://aj-software.com/configap.html