Best Rocket.Chat Alternatives in 2026

Rocket.Chat · Rocket.Chat is an open-source, self-hostable messaging platform built for sovereignty. Free Starter plan up to 50 users, Enterprise is quote-based. View Rocket.Chat review →

Whaller

The French enterprise social network with sovereign hosting

Collaboration

+2 more

Whaller is a French enterprise social network with sovereign hosting. Free plan for up to 100 members, Pro plan from €3/user/month excl. tax.

Zulip

The open source team chat organized by topics

Collaboration

+2 more

Zulip is an open source team chat app organized by topics. Free and self-hosted plans available, Cloud Standard from $6.67/user/month.

Mattermost

Open-source, self-hostable team messaging

Collaboration

+2 more

Mattermost is an open-source, self-hostable team messaging tool, an alternative to Slack. Free plan, Professional at $10/user/month.

Discord

Voice, video, and text chat for communities

Collaboration

+2 more

Discord is a voice, video, and text chat platform organized into servers, born from gaming. Free to use, Nitro add-on from $2.99/month.

Microsoft Teams

Team collaboration built into Microsoft 365

Collaboration

+2 more

Microsoft Teams brings together chat, video calls, and file sharing, integrated with Microsoft 365. Free version available, paid plans from $4/user/month.

Twist

Asynchronous, thread-based team messaging

Collaboration

+2 more

Twist is an asynchronous, thread-based messaging tool from Doist. Free plan, Unlimited at €6/user/month. A calmer alternative to Slack.