Samsung Knox is a security and privacy platform that combines defense-grade security features with an intuitive user interface. Designed to provide enterprise-level security and privacy, Samsung Knox helps keep users’ data and devices secure in both work and personal life. It provides secure mobile data management, device protection, application control, and secure access to enterprise resources. Knox also helps protect users from malicious attacks by utilizing advanced encryption, authentication, and authorization controls. With Knox, users can easily back up and sync their data across multiple devices, enabling them to access their data from any device, anytime, anywhere.
You can encrypt files and folders and workshop seamlessly between OSX and Windows. It is not a vault like Knox.
Discontinued The last update was published on 09.07.2014.
Warning The author has accepted that EncFS in its current form is dangerous (for security) for several reasons. Wikipedia has a brief summary: https://en.wikipedia.org/wiki/EncFS#General_Security_Concerns The actual audit, in which the author participated, is here: https://defuse.ca/audits/encfs.htm
Discontinued Discontinued by Wikipedia page (https://en.wikipedia.org/wiki/FreeOTFE)
Discontinued Currently not maintained. The latest version, TrueCrypt 7.1a, is still available for download and development has continued through forks https://alternativeapp.info/software/veracrypt/ and https://alternativeapp.info/software/ciphershed/. "TrueCrypt development was terminated in 5/2014 after Microsoft ended support for Windows XP. Windows 8/7 / Vista and later offer integrated support for encrypted disks and virtual disk images."