WinPatch creates self-extracting "patch&quot\; files that others can use to update their set of files to a new version. WinPatch compares an old set of files in one Windows folder to a new set of files in another Windows folder and creates a patch file that can be distributed and used by others to update their set of files to the new version. You then provide your end-users with the easy-to-use WinPatch Apply program and the patch file. Optionally, you can create a self-extracting patch file that applies the patch to the user's file system when it's executed. the end-user's machine.