WeChat - WeChat is a complete mobile communication and private social networking app.
Upwork - Forget the old rules. You can have the best people. Right now. Right here.
Presence.so - Push-to-talk voice chat for remote teams
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
Fiverr - One marketplace, millions of professional services.
Viber - Free and secure calls and messages to anyone, anywhere. Keep your conversations going no matter where you are.