Mahara is an open source ePortfolio and social networking web application. It provides users with tools to create and maintain a digital portfolio of their learning and social networking features to allow users to interact with each other.
Epic Floor Design, although I'm not sure what the idea is. if laid with clear or glass tiles to see the design would be different, but to put black tiles over doesn't make any sense. I wonder if you get a magnifying glass to view the floor.