Hi folks, I'm member of the Rocket.Chat core team.
We are glad to know that you are using and liking our chat platform.
If you don't want to install your server, we are offering our hosting solution, similar to what slack does.
Just go to the url https://rocket.chat/deploy to deploy your own server
It's free while in beta, and when we leave the beta you can export all your data and setup your own server if you don't like our prices
You can use our demo server to chat with me directly if you need https://demo.rocket.chat/direct/rodrigo.nascimento
Hope to see you there