Free open source on-the-fly encryption software
Note: After this version of TrueCrypt was released, a new version of an operating system may have been released and verified to be fully compatible with TrueCrypt.
TrueCrypt can currently encrypt the following operating systems:
Note: The following operating systems (among others) are not supported: Windows 2003 IA-64, Windows 2008 IA-64, Windows XP IA-64, and the Embedded/Tablet versions of Windows.
See also the section Supported Operating Systems.