Most of the files you're about to download need to be applied to your game. Here is a list of utilities that allow you to do this:

• Online Patcher: Marc Roblero's online patcher. Works with many different file types.
• Floating IPS: NWell-known patcher for applying IPS and BPS files.
• Delta Patcher: Used to apply xDelta files.
• More Patchers

On most files, you can also press “Patch It”, to apply the patch without downloading the file.