Yac - Take your time back from Zoom & Slack
Weet - Weet is the 1st asynchronous video messaging tool built for remote teams
Echoes - Voice-first messaging for fast & collaborative remote teams
WebRTC - WebRTC is a free, open project that enables web browsers with Real-Time Communications (RTC) capabilities via simple JavaScript APIs. The WebRTC components have been optimized to best serve this purpose.
Voxer - Turn your phone into a Walkie Talkie. Don't waste time on phone calls and voicemails.
Slack - A messaging app for teams who see through the Earth!