What chat, screen share, voice call tools do companies use to communicate with customers?

I have been trying out different tools but can't seem to find one that suits all my needs.
Basil AbbasFounder and CTO, https://clockit.io · Asked
3
Zoom.us

Cloud video conferencing and simple online meetings

Zsolt KocsmarszkyDesigning User Experience for startups · Written
We found zoom extremely reliable (which is simply the most important thing when you're working in a remote team) and great value for your money.
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