1. GnuPG

... and some security enhancements over PGP 2. Decrypts and verifies PGP 5, 6 and 7 messages. Supports ElGamal, DSA, RSA, AES, 3DES, Blowfish, Twofish, CAST5, MD5, SHA-1, RIPE-MD-160 and TIGER. Easy ...

2. Password protected website area with Apache digest authentication

Digest authentication is more secure than Basic authentication, because using digest authentication, your password is never sent across the network in the clear, but is always transmitted as an MD5 digest ...

3. How to check MD5 hash and create checksum file in Windows and Linux?

  MD5 is a widely used cryptographic hash function with a 128-bit hash value. It is commonly used to check the integrity of files. If you downloaded a file from the web and the file owner provided ...

4. HashCheck Shell Extension

Open Source checksum/hash creator and verifier for Windows (shell extension). It supports .sfv, .md4, .md5 and .sha1 file extensions. I use it and I am satisfied with it. Visit HashCheck!  ...

5. FreeCommander

...  Copy, move, delete, rename files and folders Wipe files Create and verify MD5 checksums File splitting File properties and context menu Calculation of folder size Folder comparison / synchronization ...

6. SAMInside and PasswordsPro

...  The range of hashes supported include: MySQL, MySQL5, DES(Unix), MD4, MD4(HMAC), MD5, MD5 (HMAC), MD5(Unix), MD5(APR), SHA-1, SHA-1(HMAC), SHA-256, SHA-384, SHA-512, Domain Cached Credentials, Haval-128, ...