VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
TrueCrypt - TrueCrypt is a leading cross-platform that provides encryption tools that allow you to migrate any encrypted data to virtual disks images on your systems.
LUKS - LUKS is the standard for Linux hard disk encryption.
CipherShed - CipherShed is a program that can be used to create encrypted files or encrypt entire drives...
Windows BitLocker - This topic provides a high-level overview of BitLocker, including a list of system requirements, practical applications, and deprecated features.
Cryptomator - When it comes to saving your files on a cloud server, it is important to ensure the security of those files. Keeping your delicate files out of the wrong hands can save you a lot of time and hassle. Read more about Cryptomator.