A case study of the evolution of Jun: an object-oriented open-source 3D multimedia library

Jun is a large open-source graphics and multimedia library. It is object-oriented and supports 3D geometry, topography and multimedia. This paper reviews the development of the Jun library from five perspectives: open-source, software evolution processes, development styles, technological support, and development data. It concludes with lessons learned from the perspective of a for-profit company providing open-source object-oriented software to the community.