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Quick comparison of the chat apps

Comparison of the drawbacks and benefits of Mattermost, WhatsApp, Telegram, and Signal. For more detail see Choosing a messaging app for your XR group in the "Online Tools for Communicating with Other Rebels" book.

Here is the summary from that chapter:

Whats­App Telegram Matter­most Signal

Ultimately which tool you decide to go with comes down to what you and the other people in your group are comfortable with. However, our recommendations can be summarised as:

If your group...

  • ...organises lots of different things at once Use Mattermost. The extra features and discoverability should really help to make your group more productive.

  • ...organises a lot of actions Use Mattermost combined with Signal for the added security. Also don't forget to enable disappearing messages.