FreeFileSync – Portable File Compare
FreeFileSync is a Portable File Compare or Folder Synchronization Tool. It can be used to compare files or folders by file size and date or file content. FreeFileSync supports filesizes in excess of 4GB and batch processing for automated syncronizing is possible. The tool is really easy to use thanks to a slim and easy to understand GUI. You'll be up and comparing or synchronizing files in seconds.
Portable File Compare - FreeFileSync Screenshot
Authors Website: http://freefilesync.sourceforge.net/
License: Open Source
Download: You can get this File Comparison Tool HERE