Pugsy's MAME Cheat File Archive
If you require the latest MAME cheat collection you should grab the top link only.
*** Missing Multiple Releases including the very first from 8th February 1998 ***
Pugsy's MESS Cheat File Archive
From the MAME 0.163 release these cheats are included as part of the main MAME cheat collection.
Ultimate Patcher's MAME Cheat File Archive
All the Ultimate Patcher's cheat files should only be used with a MAME from that era.