WSGI goodness spreading to other languages

In Python, we’ve been enjoying the convenience of mixing and matching various things that follow the WSGI convention for a while. More recently, Rack brought those good features to a very similar interface for Ruby. And now I see:

Jack: Rack for JavaScript

echo “Rack provides an minimal interface between webservers supporting Ruby and Ruby frameworks” | sed -e s/Rack/Jack/g -e s/Ruby/JavaScript/g

Jack comes from Tom Robinson, one of the developers of Cappuccino/Objective-J.