Mars Colonies - A free old-school RTS... on Mars
Everyday - Take a photo of yourself everyday.
OpenMCT by NASA - A web based mission control framework
Habit - Habit is a habit tracker application that allows users to keep track of the habits all day long and throughout the year.
Pixenio - Ready-to-use websites for your online business identity
Habitify - The easiest way to keep track of your habits