Best EU Alternatives to Slack

Secure, decentralized communications platform built on the Matrix open standard with end-to-end encryption.

Professional team messenger with email integration, tasks, pinboard, file sharing, and cross‑platform apps for businesses.

Open-source instant messaging and VoIP platform for friends, groups, and communities based in Sweden.

Non-profit offering privacy-friendly online services.

Secure messenger for businesses.

A Danish workspace platform combining time tracking, tasks, and team chat for human teams and AI agents.

Swiss unified communication platform for secure team collaboration.

A sovereign and modular digital workplace platform designed to connect teams and boost collaboration through social networking and communication tools.

LoveLabs is building friendly social media called Vibz World

Open standard for secure decentralized communication.

A self-hosted, open-source content collaboration platform for file sharing, communication, and productivity.

Office suite integration for Nextcloud.

Self-hosted, open-source communication platform for chat, video meetings, and webinars with a focus on digital sovereignty and data control.

A collaborative task and project management tool designed for remote teams to reduce meetings and emails.

All-in-one project management and collaboration tool for organizations with sensitive data, featuring end-to-end encryption and German hosting.

Talkspirit is a collaboration platform 100% made in Europe that modernizes your internal communication, simplifies information sharing and streamlines collabora

Secure messenger with Swiss base.

Secure, open-source enterprise messaging and collaboration platform with default end-to-end encryption.

A German unified communications platform offering integrated telephony, chat, and presence management for secure, on-premises business communication.

A modular productivity suite for project management, task tracking, and team communication with a focus on EU data sovereignty.