mai - des. - Slack introduced voice calls in March with the promise that video calling would soon follow. Now, nine months later, the company is finally rolling out a video calling feature that'll allow up to 15 people to chat simultaneously for companies on Slack's paid plans. Free users will only be able to make. Catch up with a face to face video chat. Skype gives you free video calls – making it easy to connect with friends and family, even when you're far catnets.eur: knulle. Catch up on a group video chat. Skype makes it easy to organize a video call for up to 10 people – and touch base with those who matter catnets.eur: knulle.