Seald - Keep your conversations secure, everywhere.

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.

Crypho - End-to-end-encrypted messaging and file sharing

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.

Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.

SMS Plus - SMS Plus app offers features that let you forward text messages through internet connection as well as through other social media platforms.