No specific info about version 2.5. Please visit the main page of FileMerge on Mac Informer.
Info updated on:
Juxtapose Folders simply compares two folder for differences.
This app allows you to compare the difference between two folders or files.
Patch Viewer application allows you to view patch files.
CVS module comparison tool.
View patch files, or the output from diff-like command-line tools...