If I've got a Ruby on Rails application running on my small Apache shared server (with Mongrel), can one have it to produceOroperate another total separate Rack application?

Then could I possibly develop a Rails application that handles other rails/rack applications? Therefore it could tell what applications are running and beginOrquit them after i want. Or perhaps is each application held in it's own "sandbox"?

In Rails 3 you are able to setup the router to pass through any Rack application towards the matched up route. See: Action Dispatch.

Well, you are able to certainly create a rails application that foretells a daemon that's running around the server as root after which interacts along with other applications. Unsure that you would have the ability to fit everything in from Rails...