[Win] Hash It v1.0.1 : file checksum calculation tool
Hash It is a little but fast tool to calculate the MD5 and SHA-1 hashes of a file. It works on Windows 98, Me, 2000, XP, Vista and 7. You can add it to right-click context menu in Windows explorer so that you can quickly right-click on any file and calculate the hashes. Currently, it supports only MD5 and SHA-1 hashing algorithms.