Hashish is a file and string hashing utility that computes cryptograhpic
hashes. It is cross platform and includes a gui front end. Supports drag
and drop file hashing.  Hex and Base64.

Hashing algorithms: MD5, SHA-1, SHA-2 (256/384/512), RIPEMD-160,
 HAVAL (3/4/5), Tiger, CRC32, Panama.

WWW: http://hashish.sourceforge.net/