Tetraguard 1.8.4

The solution will automatically encrypt all data written onto removables

CryptoExpert 2006 Lite 6.6.3

CryptoExpert mounts a volume file to create a "virtual drive" that appears to applications and users like any other physical drive. Any data that the user attempts to write to this drive is intercepted by CryptoExpert, encrypted, and written to file.

Advanced Encryption Package 2004 Professional 2.5.6

AEP2004 PRO's most noteworthy feature may be its flexibility and military grade encryption: program includes 17 encryption algorithms (Rijndael, TWOFISH, BLOWISH, CAST, MARS, TEA, etc) to encrypt your files. It also includes file shredder.