UA-Tester (User-Agent Tester) is a Python script that enables penetration testers to compare response headers from a remote server based on a list of User-Agent strings. The script allows testers to isolate differences in response depending on the browser used to access a site. This can be important as a growing number of sites are catering for mobile devices by forwarding them to alternative (browser friendly) pages, or redirecting them to alternative servers entirely.
You can download it from the following link: https://packetstormsecurity.com/files/download/94305/UAtester_1.03.py.txt
Source: https://packetstormsecurity.com/files/94305/UA-Tester-User-Agent-Tester-1.03.html