Slack is arguably the most popular team messaging/collaboration application out there.

While it is not an open-source solution, it is available for Linux, Windows, macOS, Android, and iOS.

Rocket.Chat, on the other hand, is one of the best open-source Slack alternatives. It is also available across all major platforms.

We at It’s FOSS use Rocket.Chat (Self-hosted) for internal team communication. But, we have also had a fair share of experiences with Slack.

Is Rocket.Chat better than Slack? What benefits do you get if you use Slack over Rocket.Chat?

If you are on the fence about deciding on a good team communication app, let me compare the offerings to help you explore more about them.