European alternatives to Slack

Find European alternatives for Slack. This page lists alternatives from companies based in a member state of the European Union (EU) or the European Free Trade Association (EFTA).

European Alternatives

No European-based alternatives listed yet for Slack.

Global Alternatives

Element (Matrix)

🌍Decentralized (UK Company/Foundation)

DecentralizedOpen SourceEnd-to-End EncryptedSelf-hostable

Secure, decentralized messaging and collaboration based on the Matrix protocol.

Website

Mattermost

🌍Open Source (US Company, often self-hosted in EU)

Open SourceSelf-hostableFreemium/Paid

Open-source platform for secure collaboration. Alternative to Slack, often self-hosted.

Website

Missing an Alternative for Slack?

Know of another great European alternative we haven't listed? Let us know!