There are some others but Memtest86 vs 3.0 is good for finding 99% of the errors.
<A HREF="http://www.memtest86.com/#download0" target="_new">Click here to download it.</A>
<A HREF="http://www.millionmanlan.com/MMLDefault.asp" target="_new">Million Man LAN 2 is June 25-29, 2003 in Louisville Kentucky... Be there!</A>