CHK is a freeware checksum utility -- a simple application designed to help you verify the integrity of your files, find duplicates. It's portable and has support for all the hashes you'll ever need: CRC16, CRC32, CRC64, ED2K, MD4, MD5, RIPEMD160, SHA1, SHA1-Base32, SHA224, SHA256, SHA384, SHA512, Tiger, and Whirlpool.
What's new in this version:
- Added CRC64 checksum
- Various improvements and bug fixes