A basic image board writting in pure-python backed by redis. Mostly, it is the product of my boredom, curiousity, and disappointment in the selection of webapps written in python. It has some cool stuff like an signal-driven (hopefully) extendable plugin engine using Blinker.
My experiments in OAuth and front end design. I'm not amazingly good at front end (this website is almost entirely from twitter's bootstrap library) so, beware. It also used some cool (at the time I wrote it) ajax and javascript template rendering.
Multiprocessed python spider/web scraping framework using tornado for asyncronus network IO.
The team behind some of the most popular (and useful) python libraries: flask, werkzeug, and the Sphinx documentation generator. The list goes on. pygmentize for example.
My second favorite programming language. The new web 2.0-y javascript alternative. A powerful language with an extremely beautiful syntax that actually makes writing javascript an enjoyable experince.