TrueCrypt

License(s):	TrueCrypt License v3.0 License data reported from: TrueCrypt 7.1 (verified by OpenLogic)
Categories: Edit	Crypto, Filesystems, Cryptography
Certification:	Certified, No Score Available
Homepage:	http://www.truecrypt.org/
Language:	C and C++

Free open-source disk encryption software for Windows 7/Vista/XP, Mac OS X, and Linux

Main Features:

Creates a virtual encrypted disk within a file and mounts it as a real disk.
Encrypts an entire partition or storage device such as USB flash drive or hard drive.
Encrypts a partition or drive where Windows is installed (pre-boot authentication).
Encryption is automatic, real-time (on-the-fly) and transparent.
Parallelization and pipelining allow data to be read and written as fast as if the drive was not encrypted.
Encryption can be hardware-accelerated on modern processors.
Provides plausible deniability, in case an adversary forces you to reveal the password.
Hidden volume (steganography) and hidden operating system.