Ohloh is a free public directory of open source software and people. Ohloh is a wiki, and anyone is welcome to join our community and add new projects to our directory, or to make corrections to existing directory pages. This public review makes Ohloh one of the largest, most accurate, and up-to-date software directories available, a community, and an analytics service. We use the data from our directory to create historical reports about the changing demographics of the open source world.