Cryptic Disk 2.5.4
Cryptic Disk 2.5 provides a simple and affordable way to protect disks and disk partitions by encrypting them. The encrypted data cannot be accessed without entering the password, even if a hacker gets access to a PC or the hard drive is stolen. The program uses the AES 256-bit encryption algorithm, the same encryption NASA, the FBI and the Department of Defense uses to protect their data. Encrypting/decrypting takes one click. Free download.

ViPNet Safe Disk 3.0.3
ViPNet Safe Disk keeps your confidential data in a strongly encrypted form on your disk and provides you with transparent access to it from any application program. ViPNet Safe Disk provides transparent "on-the-fly" encryption for your notebook or desktop personal computer. The encrypted partition resides in a single file which is easy to backup to any media like a recordable CD or DVD to protect it from data loss.

Hexprobe Disk Encryption Tool 3.02
A simple, easy-to-use disk encryption tool that encrypts and password protects your removable and external disk. It allows you choose a secure password and a gold lock or a silver lock to encrypt the logical drive on your various disks. And it uses 256-bit AES algorithm for maximum security and does not store the password on any media. Its powerful encryption ensures that only you can open an encrypted logical drive.

Rohos Disk Encryption 1.19
Rohos-Disk program creates hidden and protected partitions on the computer or USB flash drive. Those who has megabytes of sensitive files and seriously concerned with data security, cannot imagine their e-work without the secure partition.

DiskEncryptor 1.2
A transparent(on-the-fly) disk/cd encryption system, which combin with AES 256-bit encryption. DiskEncryptor can make a disk partition encrypted on the windows system. After encypted, all the operation for this encrypted disk is the same as a normal disk, when read and write, the decryption and encryption is running at background and transparently....

DiskEncryptor 1.6
A transparent(on-the-fly) disk/cd encryption system, which combin with AES 256-bit encryption. DiskEncryptor can make a disk partition encrypted on the windows system or create some new virtual disks and cds. After encypted, all the operation for this encrypted disk is as the same as a normal disk, when read and write, the decryption and encryption engine is running at background and transparently.

BestCrypt Volume Encryption 2.11.01
BestCrypt Volume Encryption software provides transparent encryption of all the data stored on fixed and removable disk devices. Once BestCrypt Volume Encryption is installed, passwords are created and volumes are encrypted, it's impossible to access any data on predefined hard disk, partition and/or volume.

ViPNet SafeDisk
ViPNet Safe Disk is an easy-to-use, reliable, user-friendly and smart program that lets you create encrypted disk partitions (drive letters) to keep your private and confidential data secure. It keeps your confidential data in a strongly encrypted form on your disk and provides you with transparent access to it from any application program. The encrypted partition resides in a single file which is easy to backup to any media like a recordable CD or DVD to protect it from data loss. ViPNet Safe Disk creates one or more virtual disks on your hard drive and/or other external storage devices. Once a user creates a virtual encrypted disk, that disk is assigned a new drive letter and appears to the user like any other system drive (like the A: or C: drive). In the working process the system is creating files so-called "containers", whose size is specified by user; the files are displayed as logic disks. When the disk is mounted, the data is automatically encrypted and decrypted when the user writes or reads this data respectively. When the disk is unmounted, either manually or by logging out of Windows, the secure data it contains becomes completely unreadable and undetectable by the operating system. Best of all, since Safe Disk appears to Windows as another drive letter, it is instantly compatible with almost any standard business application, word processor, spreadsheet or database program. All information that the user stores on the disks is kept encrypted. When read, the information automatically is being decrypted, when saved-encrypted. This process is completely transparent for a PC user. ViPNet Safe Disk Features: 1.ViPNet Safe Disk utilizes a proprietary encryption algorithm with a key length - 256 bit. 2.Intuitive user interface. The system tray menu, integration with Windows explorer makes the encryption of proprietary information easy and seamless. 3. Designed for non-security experts using transparent on-the-fly encryption of data.