# 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](https://rebeltoolkit.extinctionrebellion.uk/link/603) in the "Online Tools for Communicating with Other Rebels" book. **Here is the summary from that chapter:** | | **Whats­App** | **Telegram** | **Matter­most** | **Signal** | | ---: | :--- | :--- | :--- | :--- | | **Security** | | | | | | **Accessibility** | | | | | | **Features** | | | | | | **Discover­ability** | | | | | 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.