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... Free Open Source Mac OS X Windows Linux Drive Encryption Portable Add a feature 855 Like 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."
GnuPG GnuPG allows to encrypt and sign your data and communication, features a versatile key management system as well as access modules for all kinds of public key... Free Open Source Mac OS X Linux PortableApps.com Xfce OpenPGP Encrypted email Add a feature 101 Like
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 OS X Windows Linux No features added Add a feature 29 Like
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 OS X Windows Linux Android iPhone ... Android Tablet iPad AES encryption Add a feature 45 Like
Windows BitLocker No encryption of dynamic disks, but command-line-encryption! Dynamic disks must be converted to basic disks with EasyUS Partition Master or Partition Guru before... Commercial Windows Create bootable USB Drive Encryption Location Mapping Windows Explorer extension Add a feature 19 Like
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... Free Open Source Mac OS X Linux BSD No features added Add a feature 23 Like 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
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... Free Open Source Windows No features added Add a feature 28 Like Discontinued The last update was released 09.07.2014.
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 No features added Add a feature 12 Like
GPG Suite GPG for Mail is an open source plugin for Apple Mail. Encrypt, decrypt, sign and verify mails using OpenPGP with a few simple... Free Open Source Mac OS X GnuPG No features added Add a feature 8 Like
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 Dropbox integration Add a feature 14 Like
Kleopatra Kleopatra is a certificate manager and GUI for GnuPG. The software stores your OpenPGP certificates and keys. Free Open Source Windows Linux GnuPG Gpg encryption Add a feature 6 Like
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 OS X Windows Lightweight Add a feature 7 Like
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 No features added Add a feature 15 Like
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... Free Open Source Windows Windows Mobile Portable Add a feature 14 Like Discontinued Discontinued per Wikipedia page (https://en.wikipedia.org/wiki/FreeOTFE)
FileVault FileVault is a method of using encryption with volumes on Mac computers. Encryption and decryption are performed on the fly. FileVault 2 uses full disk, XTS-AES 128... Free Mac OS X Drive Encryption Add a feature 5 Like
