Ring4 Meeting - Dead simple video conferencing - free, in browser

Viber - Free and secure calls and messages to anyone, anywhere. Keep your conversations going no matter where you are.

Fellow.app - A manager’s co-pilot for 1:1s, meetings, feedback & goals 🚀

MiVoice Business - MiVoice Business is a business communication platform that delivers voice, messaging, mobility, presence, conferencing, collaboration and applications.

Everleagues - Everleagues is a cloud-based application that offers team communication, file sharing and storage, data tracking, and activities management.

Screenleap - Screenleap is a web app that lets users share their device's screen over the Internet. These screens can be a desktop computer monitor or a smartphone screen or anything else that can load a web browser. Read more about Screenleap.