Haven't got very many yet, but here's what I have so far.  If anyone would like to make/contribute some map files (HOWTOICM.TXT included with the program download explains how...  hint hint) you will get full credit for them.  Also, they are not all totally finished.  There are still a few more things that could be added to some of them.  If anyone has anything to contribute to an existing map file, they will get the credit for that as well.
 
 

Please note, not all emulator savestates are compatible with each other.  If fact, I don't think any of them are.  However, the battery backed RAM saves for most emus do seem to work from one emulator to the next.  So if you have savestates for a game from a different emu than what a mapfile is made for and it has battery backed RAM, you should be able to simply load the savestate in the emu it was made for, save your game, change the battery backed RAM save file's extension to the one used by the other emu, load the game in the new emu and do a state save.  I realize that this is a bit of a hassle, but until a map file for every game is made for every emu's savestate format, this will have to get you by.  Perhaps someone out there might be good enough to make a savestate converter?  I might make one if someone can give me some information on the formats of the different savestate files.