Best Mattermost Alternatives in 2026
6 alternatives reviewed to Mattermost, each compared and rated with a public methodology.
Mattermost · Mattermost is an open-source, self-hostable team messaging tool, an alternative to Slack. Free plan, Professional at $10/user/month. View Mattermost review →
The best Mattermost alternative is Talkspirit, rated 8/10. To start for free, Whaller offers a free plan. 6 alternatives compared below.
| Tool | Radar Score | Starting price | Review |
|---|---|---|---|
| Talkspirit | 8/10 | 5 €/utilisateur/mois | View review |
| Whaller | 8/10 | 3 €/utilisateur/mois HT | View review |
| Zulip | 8/10 | 6,67 $/utilisateur/mois | View review |
| Rocket.Chat | 8/10 | Sur devis | View review |
| Discord | 8/10 | 2,99 $/mois | View review |
| Microsoft Teams | 8/10 | 4 $/mois | View review |
The all-in-one French collaboration platform
Collaboration
+2 more
Talkspirit is an all-in-one French collaboration platform hosted in France for data sovereignty. No free plan, plans start at €5/user/month.
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.
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.
Open-source, self-hostable messaging built for sovereignty
Collaboration
+2 more
Rocket.Chat is an open-source, self-hostable messaging platform built for sovereignty. Free Starter plan up to 50 users, Enterprise is quote-based.
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.
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.
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