Snapchat - Real-time picture chatting
SocialSizes - Sketch templates for sharing images & videos on social media
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.
Craftwork - A collection of User Interface resources made by Craftwork
StealthChat - StealthChat is Encrypted, Private, Secure Calls and Chats on Android and Apple iOS
Dashboard UI Kit - A modern & responsive dashboard UI kit for designers.