SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Snapchat - Real-time picture chatting
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
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.
Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.
StealthChat - StealthChat is Encrypted, Private, Secure Calls and Chats on Android and Apple iOS