Have you missed the vanilla ingame server browser? Me too!
swat4stats.com now offers a replacement for the long gone gamespy master server
To use the new master server, add these lines to the hosts file according to this guide made by Sun
184.108.40.206 swat4.available.gamespy.com 220.127.116.11 swat4.master.gamespy.com 18.104.22.168 swat4.ms15.gamespy.com
P.S. This feature wouldn't air without BaDTimE's invaluable help. All hail to him!