I recently upgraded my video card and had a rough time finding programs that fit the hype of GPU password cracking, so here is what I found so that you won’t have as hard a time.

Ivan Golubev’s SHA1/MD5/MD4 cracker:
http://www.golubev.com/hashgpu.htm

Ivan Golubev’s RAR pass cracker:
http://www.golubev.com/rargpu.htm

CUDA Multiforcer (down at the time of this posting)
http://www.cryptohaze.com/bruteforcers.php

BarsWF - MD5 Cracker:
http://3.14.by/en/md5

GPU MD5 Crack: (Included in BackTrack 4 repos “gpu-md5-crack”)
http://bvernoux.free.fr/md5/index.php

Distributed Hash Cracker:
http://rpisec.net/projects/show/hash-cracker
” This is an interesting one as it has a PHP front end and is agent based, so you can use one or a dozen computers, and it will use the CPUs and GPUs available”

Pentoo Live CD with a bunch of GPU cracking goodness built in:
http://pentoo.blogspot.com/

Extreme GPU Bruteforcer (39.95 Euro)
http://www.insidepro.com/eng/egb.shtml

ElcomSoft Distributed Password Recovery ($599 for 1st lvl - 20 hosts)
http://www.elcomsoft.com/edpr.html

ax0n from http://www.h-i-r.net/ shot me an email stating that BT4 has some more GPU tools added to it:

Just FYI, BT4 also added some CUDA GPU cracking functionality a while
back ago. IIRC It includes Pyrit and CUDA-Multiforcer – maybe a few
others. Pyrit is a cuda-enabled WPA-PSK cracker that you may also be
interested in.

Pyrit - WPA/PSK - WPA2/PSK GPU cracker
http://code.google.com/p/pyrit/