Twinme - Twinme – Private Messenger is a free, secure, instant, and high-definition messaging app that protects your privacy along with giving you full control over each of your relationships and contents.
Zeplin - Collaboration app for UI designers & frontend developers
Textra - Textra is a seriously beautiful, feature rich SMS and MMS app.
Mightytext - Send & Receive SMS Text Messages from your computer. Sync'd with your Android #
Material Messaging - Material Messaging is a beautiful communication app that lets you send and receive SMS and MMS messages using the intuitive interface while giving you complete control over every aspect of your messaging experience.
Abstract - A secure, version-controlled hub for your design files