io.js vs webapp2: What are the differences?
What is webapp2? Lightweight Python web framework compatible with Google App Engine’s webapp. webapp2 is a simple. it follows the simplicity of webapp, but improves it in some ways: it adds better URI routing and exception handling, a full featured response object and a more flexible dispatching mechanism.
io.js and webapp2 belong to "Frameworks (Full Stack)" category of the tech stack.