Microsoft's Office 365 APIs can be integrated into 3rd party applications. In order to do so, the app must use Azure AD authorization to confirm accounts. This page describes how to add Microsoft Azure Active Directory common consent to an application written in ASP.NET app.
ArmorText is an easy to use, secure texting application for android. Created by mobile security company Gryphn, the application is designed to replace a phone's native texting application, giving the user the ability to securely encrypt text messages.