We have packaged and released Crossbar to the stable channel recently. Snaps and Docker images are our two main mediums of distribution. Currently the snap is based off CPython, though going forward, we will be creating a snap variant that is based off PyPy.
So start with
$ snap install crossbar
and make your IoT ideas a success 
About crossbar.io:
Crossbar.io is an open source networking platform for distributed and microservice applications. It implements the open Web Application Messaging Protocol (WAMP), is feature rich, scalable, robust and secure. Let Crossbar.io take care of the hard parts of messaging so you can focus on your app's features.