KeepSafe - Keep your entire photo library safely stored in an encrypted private cloud.
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.
Hide Secrets - Hide Secrets is an app that allows hiding everything they deem confidential on their smartphone.
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Hexlock - Security app locker keeps apps private with smart profiles for any situation
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.