European alternatives to Slack

Discover European-built tools you can use instead of Slack.

Slack made channel-based team chat mainstream, and it's now owned by Salesforce, a US company. Every message, file and integration in a workspace sits on American-governed infrastructure. For European teams with GDPR obligations, or clients who ask where data lives, that question keeps coming up. The alternatives below offer the same channels, threads, calls and integrations. Some are open source and can run on your own servers, which puts the whole workspace under your control. Others are hosted in the EU. The day-to-day experience is close enough that a team can switch without much friction.