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.
ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.
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.
Mailvelope - Mailvelope open source project. OpenPGP in your browser.
SMS Plus - SMS Plus app offers features that let you forward text messages through internet connection as well as through other social media platforms.
APG - Android Privacy Guard (APG) is a free and open source application for ...