gunicorn 'Green Unicorn' is a WSGI HTTP Server for UNIX, fast clients and sleepy applications.

Pumpkin. a simple WSGI based webframework for learning.

meinheld is a high performance asynchronous WSGI Web Server (based on picoev)

Functional Programming for Web Sites with WSGI

Sublime-Text plugin to touch all WSGI files in currently open folders, in the current window, so you don't have to.