Originally Posted by Horny Dude

I use this one for a few sites I own: http://www.gentlesource.com/short-url-script/

Word of warning, the script doesn't have that many security features so you really have to be on top of it. So many URL shortening sites get shut down due to so many scammers using them for garbage. I only have one site that I allow public access, the others are only for my use.