This tool is used to apply Playstation Patch Format files (.ppf)
It supports V1-V5 of the .ppf files
Sample binaries and ppf files can be downloaded for testing from the following link: http://rapidshare.com/files/3626589621/PPFTestV5.zip
This tool will enable you to apply PPF patch files.
I have uploaded both sample .bin files (original and patched) as well as 1 PPF file (a V5).
On bina.bin you will be able to apply either of the patches, then you can compare if they are identical and then undo on binb.bin either of the patches.
The app is also sandboxed to disable unwanted internet access or malware, only file access and printing (of the PPF description) is enabled. Other PPF files can also be fetched from the internet... they are widely used to patch up PS2/PS2/XBox .iso files.