Journalistic - A simple, yet powerful micro journaling app
Spotify - Map shows when two people play same song at same time
Nomie - Open-source mood and life tracking
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
Cactus - Static site generator for designers. Uses Python and Django templates.
SoundCloud - Enjoy music & follow favourite artists