Slack Video Messaging by Standuply - Easily record and send video messages in Slack 📹
Snapchat - Real-time picture chatting
Dubsmash - From silly lip-syncing to full featured video messaging 😜
Element.io - Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
Principle for Mac - Animate your ideas, design better apps
StealthChat - StealthChat is Encrypted, Private, Secure Calls and Chats on Android and Apple iOS