MultiHasher is a File Hash Generator or Checksum Calculator. Offered as portable freeware, it can be used to validate, check or create MD5, SHA-1, CRC32, SHA-256, SHA-384, SHA-512 hashes or checksums.
HashGenerator is a Free Hash Generator created by SecurityXploded. It can be used to quickly and easily create or generate a hash for any file or text, and also supports drag and drop Hash File Generation.
Crypto Hash Calculator is another great free and portable hash checksum calculator. It can be used to get the hash of a file and compare or verify a checksum.