Remapper
AutoHotKey Remapper v.Beta
Rearrange your keyboard with this tool. AutoHotKey Remapper help you prank someone by "rearranging" the keyboard. This software is also useful if you are a lefty and that game you like only supports a righty control scheme.
G-Hotkey
G-Hotkey is a macro, key remapper, and automation utility designed to work specifically with commercial computer games. G-Hotkey works with games that use DirectInput.
OkayKeybees v.1.0.4a
OkayKeybees is a freeware keyboard remapper with a twist. You define what keys are always replaced or what keys are replaced only when a user defined modifier key is held.
DoubleConfig v.0.03.10.08
DoubleCommand is the most capable keyboard remapper I have foundfor OS X, but it's a pain to configure.
InCD Reader v.5.9.4.0
InCD Reader allows you to read discs created with InCD on computers that do not have InCD installed. InCD Reader also provides read access to SecurDisc created discs, even on drives without SecurDisc support. Please note:
KeyRemap4MacBook v.8.0.30
KeyRemap4MacBook is an awesome utility for keyboard customization for Mac OS X.