Rocket.Chat

Freemium

Open-source communication platform you can host yourself.

Visit rocket.chat

Overview

Who it's for

Organisations that want a self-hosted Slack alternative.

Key features

Channels and DMs
Self-hosting
Omnichannel support
Federation
Apps marketplace

Pros

Open source
Highly customisable
Data control

Cons

Self-hosting takes work
Interface less refined

Rocket.Chat alternatives

Discord

Team chat apps

Voice, video and text chat for communities and groups.

Google Chat

Team chat apps

Team messaging built into Gmail and Google Workspace.

Mattermost

Team chat apps

Open-source, self-hostable team chat for security-conscious organisations.

Microsoft Teams

Team chat apps

Chat, meetings and calls integrated with Microsoft 365.

Slack

Team chat apps

The leading team chat app with channels, huddles and thousands of integrations.

FreemiumTop pick