VeraCrypt is a free open source disk encryption software brought to you by IDRIX (https://www.idrix.fr
) and based on TrueCrypt 7.1a.
It adds enhanced security to the algorithms used for system and partitions encryption making it immune to new developments in brute-force attacks. It also solves many vulnerabilities and security issues found in TrueCrypt.
More informations and downloads are available at https://veracrypt.codeplex.com