# Blog

Practical know-how on team chat, chatting with other companies and data protection.

- 31 October 2026 – [WhatsApp at work – the data protection problem and the alternatives](https://xenrooms.com/blog/whatsapp-at-work/) – Why WhatsApp groups at work worry data protection officers – phone numbers, address books, chats on private phones – and what a company team chat changes.
- 31 October 2026 – [Slack alternative from Germany – what to look for](https://xenrooms.com/blog/slack-alternative-germany/) – Looking for a Slack alternative hosted in Germany? Five questions to ask: where messages live, chat with other companies, AI, history and price.
- 31 October 2026 – [Slack Connect without Slack – chatting with other companies over Matrix](https://xenrooms.com/blog/chat-with-other-companies-matrix/) – How shared channels with clients and partners work over Matrix, the open standard for chat: what federation is, what your admin decides and where messages live.

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Source: https://xenrooms.com/blog/ (English, updated 2026-10-31)
Other languages: Deutsch: https://xenrooms.com/de/blog/index.html.md