3 open source link shorteners: 
Nobody likes an impossibly long URL.
They’re hard to decipher. But sometimes, between a deep directory structure on a site, plus a large number of parameters tacked on to the end, URLs just begin to get unwieldy. And back in the days before Twitter added their own link shortener to their service, a long URL meant taking precious characters away from your tweets.
read more: Opensource.com Jason Baker
Supporting Open Source.
Have you tried: Farking?