European alternatives to Slack

Looking for collaboration tools that offer more privacy, simpler workflows or a European footprint? Explore alternatives to Slack that provide modern team messaging, organized channel structures, and seamless integrations — without depending on a U.S.-based communication platform.

Showing 11 results

Wire

🇨🇭
Switzerland

Swiss End-to-End Encrypted Team Communication Wire is a Swiss team communication service with iOS, Android,…

Stackfield

🇩🇪
Germany

German Team Communication Platform Stackfield is a team communication service from Germany offering end-to-end encryption…

Mattermost by Stackhero

🇫🇷
France

Managed Mattermost Team Communication Mattermost by Stackhero is a managed cloud service offering open-source Mattermost…

Rocket.Chat

International

Rocket.Chat is open-source team communication platform for self-hosting. The service provides extensive guides for deployment…

Private Discuss

🇫🇷
France

Private Discuss is a team communication service from France emphasizing audio and video conferences. The…

Nextcloud

🇩🇪
Germany

Nextcloud is an open-source file hosting and collaboration platform for self-hosting. The German company behind…

Nozbe

🇵🇱
Poland

Nozbe is a team communication platform from Poland emphasizing mobile-first development. The platform includes instant…

Mattermost

International

Mattermost is an open-source team communication platform suitable for developers and all team types. The…

ginlo Business

🇩🇪
Germany

ginlo Business is a team communication and messaging platform from Germany designed for organizations prioritizing…

Element

International

Decentralized Secure Messaging Built on Matrix Element is a free and open-source instant messaging client…

Fleep

🇪🇪
Estonia

Estonian Team Collaboration Platform Fleep is a team collaboration and messaging platform from Estonia designed…

FAQ Slack

Slack is a team communication platform that organizes conversations into channels and direct messages. It allows employees to exchange messages, share files and connect third-party tools to streamline daily collaboration.
Companies often explore alternatives due to concerns about data hosting in the U.S., the desire for open-source solutions, lower pricing, stronger privacy guarantees or a preference for collaboration platforms fully hosted in Europe.
Yes. Many European tools provide real-time messaging, channels, video calls, file sharing, integrations and mobile apps — often with stronger data protection policies and GDPR-compliant hosting.
Most modern team messengers offer integration with popular cloud services, productivity apps, ticketing systems and developer platforms. Some solutions also allow self-hosted storage for increased control.
Important factors include data privacy, hosting location, pricing, security audits, available integrations, mobile and desktop support, and whether the platform offers open-source or self-hosted options.
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