Introducing Rocketship: a Rack based template that integrates multiple micro-frameworks.
I recently came across some useful Sinatra templates and ended up having to integrate several things together in a service I'm currently working on. So, I extracted the basic stuff out and it's turned out to be useful for spinning up a quick web service. Best thing is that it doesn't impose a strict structure
and you can follow best-practices of your micro-framework of choice.
Currently, Rocketship integrates Grape and Sinatra, along with a bevy of testing facilities.
Update: Some significant changes, including one that makes apps able to handle more requests concurrently.