You can start a group chat in Skype with up to 600 participants at once, just by tapping or clicking the "New Chat" option.

You can create a chat on the Signal app with individuals or groups for private, secure communication.

We hear Signal is in the news. As longtime fans of the app, and secure messaging more broadly, we feel like it's our duty at Engadget to ensure you know how to use the software properly. Signal is ...