webapp2 vs. Geddy vs. CodeIgniter

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.

Geddy is a full stack open source MVC framework based on ruby on rails methodology with built-in authentication module, passportjs and socket.io integration.

CodeIgniter is a proven, agile & open PHP web application framework with a small footprint. It is powering the next generation of web apps.