FreeOTFE v5.21

webfork on 6 Nov 2017
  • 8MB (uncompressed)
  • Released on 4 Jan 2012
  • Suggested by Rails

FreeOTFE, named for "on-the-fly disk encryption" creates one or more encrypted virtual disks using numerous available encryption algorithms (e.g. AES, Twofish, Serpent, and many more), and can be used to encrypt entire partitions. A separate application that doesn't require administrative rights called FreeOTFE Explorer is also available from the same site, using an Explorer-like interface (see version comparison).

64-bit users: FreeOTFE Explorer is functional, but Windows 7 64-bit users cannot use FreeOTFE as the drivers are unsigned.

Note: On startup, you will receive a message asking you to use portable mode drivers to start the virtual disk drivers (you need administrator rights to do this, otherwise the menu item will be grayed out). When you shutdown the program, you will also be given the option to stop the virtual disk drivers.

Note: Site offline -- linking to Sourceforge mirror.

System requirements: Win2K / WinXP / Vista / Win7
Writes settings to: Application folder
Dependencies: Administrator rights for non-Explorer version
Stealth: ? No. Device/service entries are created in the registry.
License: Freeware/Open Source: FreeOTFE Explorer License (v1.1)
How to extract: If using FreeOTFE Explorer:
Download the ZIP file and extract to a folder of your choice. Launch FreeOTFEExplorer.exe

If using FreeOTFE:
Download the ZIP file and extract to a folder of your choice. Launch FreeOTFE.exe

Optionally, to disable the "do you want to enable portable mode?" prompt:

* Launch FreeOTFE.exe /portable on /noexit


* Open the View - Options menu and select the Advanced tab. Click Autostart portable mode if FreeOTFE drivers not installed/running
Similar/alternative apps: VeraCrypt
What's new?
  • Added Russian language translation.
  • Added translator credit to "About..." dialog.
  • Minor tweaks to portableapps .com launcher.

39 comments on FreeOTFE  The Portable Freeware Collection Latest Entries Feed

webfork 2014-12-27 01:54

Peter202: please see ... I still use TrueCrypt.


Peter202 2014-12-24 10:27

@webfork What exactly is the danger of using TrueCrypt? I need encryption software mostly to create a virtual volume from which i want to run my portable applications.


webfork 2014-12-24 01:34

Peter202: for reasons I can get into in the forums, I still recommend TrueCrypt despite issues mentioned in the press. Still for most people, FreeOTFE is more than adequate.


Peter202 2014-12-23 19:55

Is it safe to use FreeOTFE? It's not been updated more than a two years.


webfork 2013-06-22 22:50

@ jonezrin: thanks, updating entry with mirror


jonezrin 2013-06-22 12:08

Website and download link appear to be dead.


webfork 2012-12-02 03:56

paulbodine: as this may be a computer issue rather than specifically a problem with FreeOTFE, I've posted my reply to a forum thread:


Midas 2012-11-30 15:51

@paulbodine: have you tried TrueCrypt?


paulbodine 2012-11-29 01:27

Here is a use that would seem common:

I want to take my 40G of files with me as a reference on consulting gigs. Since the files contain valuable IP, I want to protect the files should the thumbdrive be lost or stolen.

Bought a Lexar 64G thumbdrive (USB3.0), changed the filsystem to NTFS (so it would handle a folder larger than 4G), downloaded FreeOTFE Explorer 3.51 onto my 64-bit Windows 7 PC (USB2.0), created a 50G file on the thumbdrive, and attempted to copy the 40G folder with the files onto the drive.

It ran and ran. Two days later I stopped the transfer. Less than half had been copied. I felt if it took this long to copy things on and off the drive, it just wasn't going to work. (In addition, I plugged the thumbdrive into another PC and it required me to load FreeOTFE Explorer onto that PC before it would open the folder. I don't think I will be able to load FreeOTFE Explorer onto the PC at work, since I don't have administrator rights.)

When I deleted the folder from the thumbdrive, it took another two days to complete this task.

Obviously I'm going down the wrong path. Ideas?


Happy User 2011-03-18 19:51

Just what I needed, simple, clean, intuitive and it also has a U3 version. For me FreeOTFE Explorer is just perfect.

Very good software. I recommend it to everyone.


Older comments are hidden - Click to display all comments ▾

Post your comment