1)   Cryptainer LE Free Encryption Software 7.1.0
Encrypt any file or folder on any Windows PC. Any Media, any type of data. Cryptainer LE Free Encryption Software. Password protect any file or folder with strong Encryption. Send secure e-mail. Protects data on USB Drives, CDs and HDDs. Freeware.

 2)   Hexprobe Storage Encryption Tool 2.0
A simple, easy to use disk encryption tool that encrypts and password protects your removable and external disk. Its powerful encryption ensures that only you can open an encrypted logical drive.

 3)   DeviceShield 1.4.0
Deviceshield acts as firewall that works on the INSIDE to control access to ALL Removable Media Devices. It protects your data from inside security breaches by removeable media devices such as USB memory sticks, CD/DVD drives, Firewire etc.