Alternatives to PenProtect for all platforms with any license

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
Drive Encryption Encryption Portable Security focused Add a feature

861 Like
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
Create bootable USB Drive Encryption Encryption ... Location Mapping Windows Explorer extension Add a feature

29 Like
Axcrypt

AxCrypt is a simple file encryption software for Windows. It integrates seamlessly with your workflow to encrypt, decrypt, store, send and work with files. Main...

Freemium Mac Windows Android iPhone iPad
AES encryption Multiple languages Works Offline Portable ... Real time collaboration Shell integration Add a feature

86 Like
Seahorse

Seahorse is a front end for GnuPG, that integrates to the GNOME desktop. It is a tool for secure...

Free Open Source Linux GnuPG
Gpg encryption SSH Add a feature

22 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...
- 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
Encryption Add a feature

26 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 Windows
Pdf encryption Encrypted Lightweight Add a feature

11 Like
File Lock PEA

Platform-independent password-based authenticated encryption of files & folders.

Free Open Source Mac Windows Linux BSD
Authenticated encryption File by file encryption Data-encryption Encrypted ... Encryption Password protection Add a feature

9 Like
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
Cloud sync Sync with Dropbox Encrypted folder Add a feature

12 Like
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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
Data-encryption Add a feature

12 Like
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 ...
- Discontinued
  Last release Nov 24, 2015 https://github.com/t-d-k/LibreCrypt/releases
Free Open Source Windows
No features added Add a feature

12 Like