DiskCryptor is a great open source tool which can encrypt data stored on physical hard drives, USB sticks, memory cards and virtually any device that is able to be mounted onto a Windows PC. It is an alternative to TrueCrypt which was recently discontinued.
The program supports dynamic disks and can enable encryption on partitions. It uses built-in algorithms like AES, Twofish and Serpent. It can also boot encrypted partitions, meaning you can use DiskCryptor with a bootloader.
It is important to note that encryption and decryption can cause performance issues, but DiskCryptor is able to take advantage of VIA chipsets and hardware accelerated AES on Intel processors.Features and highlights
DiskCryptor is licensed as freeware for the Windows (32-bit and 64-bit) operating system / platform from data encryption software without restrictions. DiskCryptor 1.1.846.118 is available to all software users as a free download (Freeware).
Compatibility with this disk encryption software may vary, but will generally run fine under Microsoft Windows 10, 8, 8.1, 7, Vista and XP on either a 32-bit or 64-bit setup. A separate x64 version may be available from ntldr. This download was signed by diskcryptor.net and distributed as dcrypt_setup.exe.
We have tested DiskCryptor 1.1.846.118 against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.