It's an open protocol so someone just has to write a gem for it. My friend Kevin at VHX is working on a ruby port.

https://twitter.com/ksheurs

A quick google led me to this: https://github.com/mrbrdo/rack-webconsole

Just finished a ruby implementation:

https://rubygems.org/gems/chrome_logger

You can now use the plugin with any Rack compatible Ruby framework.