Mercury is a free framework for bug hunters to find vulnerabilities, write proof-of-concept exploits and play in Android. Use dynamic analysis on Android applications and devices for quicker security assessments. Use a proper shell that allows you to play with the underlying Linux OS from the point of view of an unprivileged application (you will be amazed at how much you can still see) Find information on installed packages with optional search filters to allow for better control. Use tools to upload and download files between the Android device and computer without using ADB (this means it can be done over the internet as well!)
Source: https://thehackernews.com/2012/03/mercury-v10-framework-for-bug-hunters.html