FreeOTFE logo FreeOTFE
Free disk encryption software for PCs and PDAs
(PDA version of WWW site)

What is FreeOTFE?
FreeOTFE is a free, open source, "on-the-fly" transparent disk encryption program for PCs and PDAs

Using this software, you can create one or more "virtual disks" on your PC/PDA. These disks operate exactly like a normal disk, with the exception that anything written to one of them is transparently, and securely, encrypted before being stored on your computer's hard drive.

Features include:

  • Source code freely available
  • Easy to use; full wizard included for creating new volumes
  • Both PC and PDA versions are available; data encrypted on your PC can be read/written on your PDA, and vice versa
  • No need to install it; making it ideal for use on USB memory drives, etc
  • Available in English, German and Italian, with support for other language translations
  • Optional support for smartcards and security tokens
  • It's powerful: Supporting numerous hash (including SHA-512, RIPEMD-160, Tiger) and encryption algorithms (including AES, Twofish and Serpent) in several modes (CBC, LRW and XTS) - providing a much greater level of flexibility than a number of other (including commercial!) OTFE systems
  • Encrypted volumes may either be file, partition, or even disk based
  • Much more!

See the full features list and screenshots for more details!

FreeOTFE v4.50 released (1st January 2009)
v4.50 of the PC version of FreeOTFE is now available for download, and includes an Italian translation together with various display improvements and maintenance fixes

If you can help by translating FreeOTFE into other languages, please join in!

FreeOTFE v4.40 released (20th November 2008)
v4.40 of the PC version of FreeOTFE has now been released, and includes a German translation and various maintenance fixes and enhancements over v4.30.

Translators wanted! (27th October 2008)
Among other improvements, FreeOTFE v4.3 introduces support for languages translations, allowing the user interface to be shown in the user's native language.

If you are a native speaker of a language other than English, and would like to help out with the FreeOTFE project, please see the page on translating FreeOTFE for information on how you can help translate FreeOTFE into as many languages as possible!

FreeOTFE v4.30 and FreeOTFE4PDA v3.05 released (27th October 2008)
v4.30 of the PC version of FreeOTFE has now been released, featuring a number of enhancements, including:
  • Added functionality to support language translations
  • Further commandline options
  • Parameter passing to autorun applications on mounting/dismounting
  • A number of interface improvements
  • Various other enhancements!

A maintenance release of the PDA version has also been released (v3.05), which includes updated documentation and resolves the "storage device could not be activated at this time" issue seen by a small number of users

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