Displaying checksums and hashes within Windows Explorer

In case you want to have a quick way to check if two files are really identical, you will most likely use a hash tool and view the SHA-1 or MD5 hash.

The best I have found so far is HashCheck Shell Extension by Kai Liu which will simply add a tab on the file properties dialog of the Windows Explorer. Easy, fast and works with Windows 7 (x32 or x64).