EU Alternatives to Microsoft Teams

Wire

🇨🇭 Switzerland Since 2014 500+ enterprises users

Open Source ISO 27001SOC 2

500+ government agencies chose Wire for a reason. Slack-like collaboration meets true end-to-end encryption. Swiss-based. Self-host on your servers if you want. Independent security audits confirm what we claim.

Element

🇬🇧 United Kingdom Since 2017 65M+ Matrix users users

Open Source BSI certified (German gov)

The French government uses it. The German military uses it. Mozilla uses it. Built on Matrix, the only truly decentralized messaging network. No vendor lock-in. Federate with others or run your own server.

Threema Work

🇨🇭 Switzerland Since 2012 11M+ users

Open Source Independent security audit

No phone number or email required for signup. Complete anonymity by design. Swiss-made, open-source, independently audited. 11 million users. Collects no metadata about your conversations.

Rocket.Chat

🇧🇷 Brazil Since 2015 12M+ users

Open Source SOC 2HIPAA ready

The most popular open-source Slack alternative with 12 million users. Self-host on your own servers, customize extensively, connect 150+ apps. Full control over your data and infrastructure.