...Speedcrypt implements libraries such as Bouncy Castle and others among the most used in the world of cryptography!
Speedcrypt is a free program for encrypt the files which helps you to manage in a secure way. The files are encrypted using the best and most Secure Encryption algorithms currently known: AES-GCM, AES RIJNDAEL, PGP, AES (String Crypto 256 Bit Key) SERPENT, CHACHA20, XCHACHA20-POLY1305. Speedcrypt is it really free, more than that: it is Open Source. You can have a look at its full source code and check whether the security features are implemented correctly.