VersionTracker now lists an entry for PPFMaster 1.0, a Mac application created by Scotiasoft Systems for applying PlayStation Patch Files. From their site:

Originally designed for the Halo modding scene, PPFMaster is a simple Applescript GUI wrapper around Paradogs' ApplyPPF and MakePPF3 binaries. Their tool, PPF-O-Matic, doesn't work for Mac OS X 10.3 Panther, so ScotiaSoft Systems developed a simple tool to create and apply PPF patches.

Scotiasoft produced saved game editors for the role playing games Fallout 1 and Fallout 2 on the Mac in 2002. You can download PPFMaster 1.0 from their site.