TrueCrypt is described as '[TrueCrypt is not exactly "Open Source", but the source is available. See the reviews to get more information.]' and is a leading Disk Encryption tool in the security & privacy category. There are more than 100 alternatives to TrueCrypt for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best TrueCrypt alternative is VeraCrypt, which is both free and Open Source. Other great apps like TrueCrypt are Cryptomator, Picocrypt, LUKS and File Lock PEA.
An app that encrypts text files using the secure AES (Advanced Encryption Standard) encryption, which is approved in the United States for government documents with the highest level of confidentiality.
