FS-UAE: Amiga emulator based on WinUAE but (IMO) better - certainly more accessible to non-spods.
WHDLoad: A program that allowed you to install games to a hard drive, provided that you had the original game and someone had written a "slave" for that game to make it work on a hard drive.
The stuff I've posted in M/O is just a collection of all (or most, I expect, as I may have pruned) known WHDLoad games ready to play using FS-UAE