Slack's new app integrates Microsoft Teams calling features into its chat app today.

However, you can't take part in Teams calls entirely within Slack,...

Microsoft unveiled new features for its Teams corporate-chat software, timed to the product’s third anniversary and arriving amid a surge of interest in digital workplace...

Slack's stock price opened at $38.50 a share Thursday, making the company's CEO Stewart Butterfield a billionaire.

The work-messaging company—trading under the aptly-named ticker...

Google has updated its internet chat tool Hangouts, aiming to make it suitable in workplaces and compete with business software makers including Microsoft and...