Homomorphic encryption - Homomorphic encryption by IBM allows you to perform computations on its encrypted data without first decrypting it.
Message Peeping Tom - Message Peeping Tom is an app by HSTAR, offers features that let you read your messages without giving the read report to the sender.
DESlock+ - DESlock+ is a suite of encryption instruments designed to shield in opposition to unintended storage platforms like the loss of a USB stick or computer and to allow relaxed collaboration and information sharing within the boundaries.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
KETS Quantum Key Distribution - KETS Quantum Key Distribution service is a utility that allows future-proof, quantum-safe communications at ultra-low power in a low-cost Quantum Key Distribution chip.
Seecrypt - Seecrypt app allows users to do secure voice and conference calls by using advanced encryption features so they can contact their friends, colleagues, and family members without any privacy issues.