We have seen number of free programs like Plain Text, Strip Mail to remove text formatting from clipboard text on Windows OS. Are you looking for similar free utility for MAC OSX system? Plain Clip is simple and free utility to remove clipboard text formatting with ease on MAC OSX systems.
It does not have user interface except settings windows (as seen above). You can configure various settings for Plain Clip text formatting removal process like trailing spaces, invisible characters, line breaks etc. Download Pain Clip for MAC system for easy formatting removal of clipboard text.