Androguard (Android Guard) is a tool written in python which helps us to analyze, display, modify and save your apps easily and statically by creating your own software (by using the API), or by using the tool (androlyze) in command line. This tool is useful when you would like to do reverse engineering on a specific application (e.g : malware).

Download
http://code.google.com/p/androguard/downloads/list