StatusNet - The StatusNet platform enables communities, brands and organizations to incorporate micro messaging...
Frysbe - Frysbe: Make global friends at random and the fling app comes up with features to send messages to strangers from every corner of the world to expand your social circle.
Octopress - A static blogging framework for hackers, based on Jekyll
Yochat - Yochat app enables users to get to know about strangers from a large number of countries from around the world by video chatting with them.
TidyCMS - TidyCMS is a lightweight, static html file CMS.
PenPal World - Connect with people all over the world