Is there a smalltalk equivalent for rack/wsgi/ring etc out there? I have an idea I'm going to play with that would be best served by building on something like rack. If there isn't one already, I'll implement one first and then move on to the idea that builds on it. If there is one, I'd rather see if it meets my needs and use it. Any pointers to anything appreciated. For anyone not familiar with rack et al: They are basically' middleware' layers providing a standard interface between webservers and applications. Middleware is a little deceptive... a better description might be that it is an interface that allows you to hook into between a webserver and other end points by either hooking up an application or middleware ( authentication, file serving ) that can be composed together as part of a specific application. http://rack.rubyforge.org/ https://github.com/mmcgrana/ring http://www.wsgi.org/wsgi/