Why switch from Slack?
Slack is a popular communication tool — but at $7.25–$15/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.
Element
Free
Free (self-hosted)
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Moderate
· ~2 hours
Mattermost
Free
Free (self-hosted)
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Easy
· ~30 mins
Zulip
Free
Free (self-hosted)
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Moderate
· ~1-2 hours
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🔗 Related: More Communication Alternatives
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