CheckMD5 is a python program that calculates the MD5 checksum of a file, and compares it to an original either by selecting an original copy of the file, or manually entering the checksum of the original file, such as when it is provided on a website from which you downloaded a file.
For more information reference the Readme file inside the archive.
There's a video tutorial I recorded that you can watch at: http://youtu.be/ksIB9iQKHWg
- Compare the MD5 checksum of a file to a checksum you enter
- Compare the MD5 checksum of a file to another file
checkmd5 works perfectly.