CipherShed is free (as in free-of-charge and free-speech) encryption software for keeping your data secure and private. It started as a fork of the now-discontinued TrueCrypt Project.
CipherShed is a program that can be used to create encrypted files or encrypt entire drives (including USB flash drives and external HDDs). There’s no complicated commands or knowledge required; a simple wizard guides you step-by-step through every process.
After creating an encrypted file or disk drive, the encrypted volume is mounted through CipherShed. The mounted volume shows up as a regular disk that can be read and written to on-the-fly. The encryption is transparent to the operating system and any programs. When finished, the volume can be unmounted, and stored or transported elsewhere, fully secured. Encryption volumes can be moved from OS-to-OS (eg, Windows to Mac) with full compatibility.
CipherShed is cross-platform; It will be available for Windows, Mac OS and GNU/Linux.