Free open-source disk encryption software for Linux
BSEditor: Free open-source disk encryption software for 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.

* Provides plausible deniability, in case an adversary Forces you to reveal the password:
Hidden volume (Steganography) and hidden operating system.

* Encryption algorithms: AES-256, Serpent, and Twofish. Mode of operation: XTS. you can free download TrueCrypt for Linux 6.3a now.