TRY IT –> https://slack.com/
Slack provides a communication workspace for your startup team to create chats organized around specific topics for example “marketing”, “web development”, or “sales” in order to keep conversations structured.
Fight the biggest problem with Facebook or Whatsapp for team communication which is reading +50 messages to catch up with long discussions. With Slack, nobody gets lost because every discussion is broken into specific topics and work can be assigned directly to members.
Price – Free Plan without group video calls/screen sharing.