Evolution patterns of open-source software systems and communities

ABSTRACT

Open-Source Software (OSS) development is regarded as a successful model of encouraging "natural product evolution". To understand how this "natural product evolution" happens, we have conducted a case study of four typical OSS projects. Unlike most previous studies on software evolution that focus on the evolution of the system per se, our study takes a broader perspective: It examines not only the evolution of OSS systems, but also the evolution of the associated OSS communities, as well as the relationship between the two types of evolution.Through the case study, we have found that while collaborative development within a community is the essential characteristic of OSS, different collaboration models exist, and that the difference in collaboration model results in different evolution patterns of OSS systems and communities. To treat such differences systematically, we propose to classify OSS into three types: Exploration-Oriented, Utility-Oriented, and Service-Oriented. Such a classification can provide guidance on the creation and maintenance of sustainable OSS development and communities.

REFERENCES

• 1: Atsushi Aoki , Kaoru Hayashi , Kouichi Kishida , Kumiyo Nakakoji , Yoshiyuki Nishinaka , Brent Reeves , Akio Takashima , Yasuhiro Yamamoto, A case study of the evolution of Jun: an object-oriented open-source 3D multimedia library, Proceedings of the 23rd International Conference on Software Engineering, p.524-533, May 12-19, 2001, Toronto, Ontario, Canada
• 2: John Seely Brown , Paul Duguid, The Social Life of Information, Harvard Business School Press, Boston, MA, 2000
• 3: Chris DiBona , Sam Ockman , Mark Stone, Open Sources: Voices from the Open Source Revolution, O'Reilly & Associates, Inc., Sebastopol, CA, 1999
• 4: Roy T. Fielding, Shared leadership in the Apache project, Communications of the ACM, v.42 n.4, p.42-43, April 1999 [doi>10.1145/299157.299167]
• 5: FSF, GNU Coding Standards, at http://www.gnu.org/prep/standards toc.html, accessed on 2/11, 2002
• 6: FSF, GNU Philosophy, at http://www.gnu.org./philosophy/philosophy.html, accessed on 2/11, 2002
• 7: Michael W. Godfrey , Qiang Tu, Evolution in Open Source Software: A Case Study, Proceedings of the International Conference on Software Maintenance (ICSM'00), p.131, October 11-14, 2000
• 8: HackVan, S., Where Did Spencer Kimball and Peter Mattis Go?, at http:/devlinux.com/, accessed on 2/11, 2002
• 9: Chris F. Kemerer , Sandra Slaughter, An Empirical Approach to Studying Software Evolution, IEEE Transactions on Software Engineering, v.25 n.4, p.493-509, July 1999 [doi>10.1109/32.799945]
• 10: Lave, J., and E. Wenger. Situated Learning: Legitimate Peripheral Participation. Cambridge University Press, Cambridge, UK, 1991.
• 11: Maturana, H. R., and F. J. Varela. The Tree of Knowledge: The Biological Roots of Human Understanding. Shambhala Publications, Boston, MA, 1998.
• 12: Audris Mockus , Roy T. Fielding , James Herbsleb, A case study of open source software development: the Apache server, Proceedings of the 22nd international conference on Software engineering, p.263-272, June 04-11, 2000, Limerick, Ireland [doi>10.1145/337180.337209]
• 13: O'Reilly, T., OSI Business Support, at http://www.opensource.org/advocacy/case for business.html, accessed on 2/11, 2002
• 14: Tim O'Reilly, Lessons from open-source software development, Communications of the ACM, v.42 n.4, p.32-37, April 1999 [doi>10.1145/299157.299164]
• 15: John K. Ousterhout, Scripting: Higher-Level Programming for the 21st Century, Computer, v.31 n.3, p.23-30, March 1998 [doi>10.1109/2.660187]
• 16: Eric S. Raymond , Bob Young, Cathedral & the Bazaar: Musings on Linux and Open Source by an Accidental Revolutionary, O'Reilly & Associates, Inc., Sebastopol, CA, 2001
• 17: Tiemann, M. Future of Cygnus Solutions, in Open Sources: Voices from the Open Source Revolution, Stone, M. (ed.), O'Reilly, Sebastopol, 1999, 71-89.
• 18: Linus Torvalds, The Linux edge, Communications of the ACM, v.42 n.4, p.38-39, April 1999 [doi>10.1145/299157.299165]

INDEX TERMS

Keywords:
case study, open-source software (OSS), open-source software community, software evolution