TrueCrypt

[TrueCrypt is not exactly "Open Source", but the source is available. See the reviews to get more information.] TrueCrypt is a disk encryption software for...

• Discontinued Currently unmaintained. Last version, TrueCrypt 7.1a, is still available for download and development has continued via the forks https://alternativeto.net/software/veracrypt/ and https://alternativeto.net/software/ciphershed/. "The development of TrueCrypt was ended in 5/2014 after Microsoft terminated support of Windows XP. Windows 8/7/Vista and later offer integrated support for encrypted disks and virtual disk images."

Free Open Source Mac Windows Linux

AES Crypt

AES Crypt is an advanced file encryption utility that integrates with the Windows shell or runs from the Linux command prompt to provide a simple, yet powerful, tool for...

Free Open Source Mac Windows Linux Android iPhone ... Android Tablet iPad

CipherShed

CipherShed is a program that can be used to create encrypted files or encrypt entire drives (including USB flash drives and external HDDs).

Free Open Source Mac Windows Linux

LUKS

LUKS is the standard for Linux hard disk encryption. By providing a standard on-disk-format, it does not only facilitate compatibility among distributions, but also...

Free Open Source Linux

Windows BitLocker

BitLocker Drive Encryption is a data protection feature that integrates with the operating system and addresses the threats of data theft or exposure from lost, stolen...

Commercial Windows

Gnome Encfs Manager

The Gnome Encfs Manager is an easy to use manager and mounter for encfs stashes. It allows you to create encrypted directories, any file that is placed in such a...

Free Open Source Linux

eCryptfs

The enterprise cryptographic filesystem for Linux

Free Open Source Linux

LibreCrypt

LibreCrypt (formerly DoxBox) is an open-source disk encryption for Windows and the successor of FreeOTFE Change of name to 'LibreCrypt' in version 6.2 ...

Free Open Source Windows

DiskCryptor

DiskCryptor is the only truly free solution, provided under GNU General Public License (GPLv3), which offers encryption of all disk partitions, including the system...

• Discontinued The last update was released 09.07.2014.

Free Open Source Windows

Encrypto

Encrypto lets you encrypt files before sending them to friends or coworkers. Just drop a file into Encrypto, set a password, and then send it however you normally would...

Free Mac Windows

Cryptonite

Cryptonite brings EncFS and TrueCrypt to Android. You can browse, export and open EncFS-encrypted directories and files on your Dropbox and on your phone. On rooted...

Free Open Source Android Android Tablet

EncFS

EncFS provides an encrypted filesystem in user-space. It runs without any special permissions and uses the FUSE library and Linux kernel module to provide the filesystem...

• Warning The author has agreed that EncFS in its current form is dangerous (to security) for several reasons. Wikipedia has a brief summary: https://en.wikipedia.org/wiki/EncFS#General_Security_Concerns The actual audit, which the author participated in, is here: https://defuse.ca/audits/encfs.htm

Free Open Source Mac Linux BSD

Jetico BestCrypt

If your computer were ever to be stolen, are you certain that your personal information cannot be discovered? Jetico’s BestCrypt software automatically encrypts your...

Commercial Mac Windows Linux

FreeOTFE

FreeOTFE is a free, open source, "on-the-fly" (OTFE) disk encryption program for PCs running MS Windows and Windows Mobile PDAs (FreeOTFE4PDA). It creates...

• Discontinued Discontinued per Wikipedia page (https://en.wikipedia.org/wiki/FreeOTFE)

Free Open Source Windows Windows Mobile

encfs4win

This is an experimental project of porting encfs to the Windows world. Use First time install required Dokan library; Extract executable (or compile by your...

Free Open Source Windows