Date Added: Oct 2011
Much of the universe of open-source software is categorized; abundant open-source software is found for most categories. However, relatively few dual-licensed open-source software programs are found, and very little open-source software is found for vertical markets. Explanations are explored. The phrase open source has been in common use since it was suggested in 1998 by Christine Peterson as an alternative name for what many call free software (Open Source Initiative, 2007). This paper is an attempt to categorize each package of a large sample of open source software, so as to discover the domains in which open source development has been occurring, and in which domains, if any, there has been little or no open source development activity.