Some of the most striking feature is that OSS development is based on the contributions of volunteer programmers that the programmer only related to one another through informal community, that the resulting software products made available free of charge, and that the conventional development method can produce software of high complexity and exceptional quality. The simple fact that the production carried out by voluntary and private programmers that valuable results are provided to consumers for free, has caused far-reaching effects on market structure, business model, and process innovation in the software industry.