Bruce Perens (born 1958) is an American computer programmer and advocate in the open source community. He created the Open Source Definition and published the first formal announcement and manifesto of open source. He co-founded the Open Source Initiative (OSI) with Eric S. Raymond.In 2005, Perens represented Open Source at the United Nations World Summit on the Information Society, at the invitation of the United Nations Development Program. He has appeared before national legislatures and is often quoted in the press, advocating for open source and the reform of national and international technology policy.Perens is also an amateur radio operator, with callsign K6BP. He is well known in the amateur radio community for his efforts towards open radio communications standards.