Proxy Tester is a proxy list tester and then it generates a wpad.dat file you can use for your browser based on working servers. wpad.dat file selects a random proxy server from the list of provided working proxy servers with each connection request.
AllPairs is an open source test combinations generator written in Python. It allows one to create set of tests using 'pairwise combinations' method, reducing a number of combinations of variables into a lesser set that covers most situations.