Using Checksums (like MD5) to de-duplicate image collections on Controlledvocabulary.com
md5 hash generator extension - Opera add-ons
IOS 301 international - MD5 & SHA Checksum Utility is a tool that allows you to generate CRC32, MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of single or multiple files. You can
How to generate an MD5 checksum
Download MD5 File Hasher 2.0
OSForensics - FAQs - How to check the MD5 (or SHA1) hash checksum of an entire volume, disk or image