6 tested alternatives to Slack. Each was assigned the same job label from a fixed vocabulary we maintain — not from how the vendor describes itself — and every one is scored on the same objective 7-Frame benchmark. Ordered by score.
Same job does not mean same platform, same country, or same price tier. Check before you switch.
Mattermost — Mattermost is a self-hostable team messaging and collaboration platform for enterprises
CircleChat — CircleChat is a team chat platform where AI agents plan and execute work alongside humans
Discord — Discord is a group chat platform for gaming, communities, and hanging out
Dovo — Dovo is an open community platform for voice chat and group chat
Chatto — Self-hosted, web-based chat application you can run on a single server for free
Fosbury — Fosbury is a communication tool designed for teams that build products
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