💬 Communication

Best Free Alternatives to Microsoft Teams

1 open-source alternative — with pricing, self-hosting difficulty scores, and step-by-step migration guides.

✅ 1 Alternative Compared 🔓 All Open Source 💰 All Free to Self-Host 📅 April 09, 2026
Current cost: Free / $6–$22/user/month with Microsoft Teams
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💰 Switch and pay $0/month with open source

Why switch from Microsoft Teams?

Microsoft Teams is a popular communication tool — but at Free / $6–$22/user/month per user, the costs add up quickly for growing teams. Every alternative below is free to self-host, open source, and actively maintained. You own your data, control your infrastructure, and pay nothing per seat.

Mattermost
Free
Free (self-hosted)
●●○○○ Easy · ~30 mins
⭐ ~30k on GitHub
Full Comparison → Migration Guide →
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