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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

With 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:

  • Highly portable - Not only does FreeOTFE offer "portable mode", eliminating the need for it to be installed before use, it also offers FreeOTFE Explorer - a system which allows FreeOTFE volumes to be accessed not only without installing any software, but also on PCs where no administrator rights are available. This makes it ideal for use (for example) with USB flash drives, and when visiting Internet Cafés (AKA Cybercafés), where PCs are available for use, but only as a "standard" user.
  • 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. Supports all versions of MS Windows from Windows 2000 onwards (including Windows 7), and Windows Mobile 2003 and later (including Windows Mobile v6.5)
  • No need to install it; making it ideal for use on USB memory drives, etc
  • Support for encrypted Linux volumes (Cryptoloop "losetup", dm-crypt and LUKS)
  • Available in English, Spanish, German, Italian, French, Czech, Japanese, Croatian, Greek and Russian - with support for other language translations
  • Optional support for smartcards and security tokens
  • It's powerful: Supporting numerous hash (including SHA-512, RIPEMD-320, 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/FreeOTFE4PDA v5.21 and FreeOTFE Explorer v3.51 released (7th Feb 2010)
FreeOTFE/FreeOTFE4PDA v5.21 and FreeOTFE Explorer v3.51 are now available for download.

These new versions add a Russian language translation

FreeOTFE Explorer v3.50 released (3rd January 2010)
v3.50 of FreeOTFE Explorer is now available for download.

This new version adds support for using keyfiles with LUKS volumes, doubleclick extraction of files, Greek and Croation language translations, a bugfix for when running under the 64 bit versions of Windows Vista and Windows 7, and a few other minor improvements.

FreeOTFE Explorer v3.50 is also available in both U3 and portableapps.com packages - as well as standard installer and ZIP archive releases - providing better integration with these two systems and making it even easier to take with you!

Please see the Version history for more details on what's changed!

FreeOTFE v5.20 and FreeOTFE4PDA v5.20 released (3rd January 2010)
v5.20 of the PC version of FreeOTFE, and v5.20 of the PDA version (FreeOTFE4PDA) are now available for download

The new PC version adds support for using keyfiles with LUKS volumes, doubleclick selection of partitions (when used) and a few other minor improvements.

The PC version of FreeOTFE is also available in both U3 and portableapps.com packages - as well as standard installer and ZIP archive releases - providing better integration with these two systems for those who have and use them.

The PDA version sees an improved user interface to better support language translations and improvements to password handling when used under Windows Mobile 6.5

Both PC and PDA versions also now include Greek and Croation language translations.

To read more about the specifics of what's new, please check the Version history.

Translators still wanted! (3rd January 2010)
FreeOTFE, FreeOTFE4PDA and FreeOTFE Explorer are now available in the following languages:
  • Croation
  • Czech
  • English
  • French
  • Italian
  • German
  • Greek
  • Spanish
  • Japanese

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!

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