The Social Production of Ethics in Debian and Free Software Communities

This chapter examines the way that participation in Free software projects increases commitments to information freedom among participants. With the Debian project as its core case study, it argues that in Free and Open Source software communities, ethics are reinforced through the sustained collaborative development of code and discussions and decisions around Free software licenses and project policy. In the final section, the chapter draws on the ethnographic analysis of ethical cultivation in Debian to describe a model of ethical volunteerism based on institutional independence, volunteer labor, and networks of trust that is applicable to a range of vocations.

Experiences Enhancing Open Source Security in the POSSE Project

This chapter reports on our experiences with POSSE, a project studying “Portable Open Source Security Elements” as part of the larger DARPA effort on Composable High Assurance Trusted Systems. We describe the organization created to manage POSSE and the significant acceleration in producing widely used secure software that has resulted. POSSE’s two main goals were, first, to increase security in open source systems and, second, to more broadly disseminate security knowledge, “best practices,” and working code that reflects these practices. POSSE achieved these goals through careful study of systems (“audit”) and starting from a well-positioned technology base (OpenBSD). We hope to illustrate the advantages of applying OpenBSD-style methodology to secure, open-source projects, and the pitfalls of melding multiple open-source efforts in a single project.

Benefits and Pitfalls of Open Source in Commercial Contexts

This chapter intends to show how companies can benefit from open source software and its development culture and how the open source communities could, in turn, be stimulated and accelerated. One of the first major steps for businesses that plan to act in this context is to accept that open source projects have their own communication culture. After explaining this fact, we illustrate its relevance on the basis of a case study in which an open source framework was used to build a commercial product. The decision-making process and the lessons learned from it point out some guidelines, particularly for companies that offer projects rather than products. As there are, however, more parties involved than just the developers when OSS is discussed as a business opportunity, we also classify the different players in the software business such as distributors, system integrators, and software/hardware vendors. Findings on roles and their motivations and restraints, partially based on a survey carried out within our research project, point up this categorization. The authors hope that this overview of the benefits and pitfalls will encourage more companies to make use of and invest in the open source way to develop and deploy software.

Coordination and Social Structures in an Open Source Project

This chapter tackles the issue of the distribution of work in an open source project through the influence of social relationships among developers. The author demonstrates that the concentration of code in the VideoLAN project —already pointed out in other projects—does not only depend on technical expertise but is strongly influenced by the nature of social relationships among developers. Face-to-face relationships have a great importance, as does friendship which can favor the circulation of advice. In addition to technical expertise, a second kind of expertise —the ability to be aware of who is working on what—determines the hierarchy within this entity that looks like a collegial organization. The author hopes that this work will help to reduce the hiatus between technical and social considerations on open source software.

The Co-Evolution of Systems and Communities in Free and Open Source Software Development

Because a Free and Open Source Software (F/OSS) project is unlikely to sustain a long-term success unless there is an associated community that provides the platform for developers, users, and user-turned-developers to collaborate with each other, understanding the well-observed phenomenon that F/OSS systems experience “natural product evolution” cannot be complete without understanding the structure and evolution of their associated communities. This chapter examines the structure of F/OSS communities and the co-evolution of F/OSS systems and communities based on a case study. Although F/OSS systems and communities generally co-evolve, they co-evolve differently depending on the goal of the system and the structure of the community. A systematic analysis of the differences leads us to propose a classification of F/OSS projects into three types: Exploration-Oriented, Utility-Oriented, and Services-Oriented. Practical implications of realizing the co-evolution and recognizing the different types of F/OSS projects are discussed to provide guidance for F/OSS practitioners.

Free Software Development

This chapter presents an empirical study of a free software development community and how its virtual organizational culture influences its work practices. Results show that beliefs in free software and freedom of choice, and values in cooperative work and community influence work practices and norms. The authors wish to convey the importance of understanding the deeply held beliefs and values of the free software movement by showing how a free software development community uses computer-mediated communication in the form of IRC (instant messaging), mailing lists, and summary digests to mitigate and resolve conflicts, build a community, reinforce beliefs, and facilitate teamwork. Results are intended to assist future contributors and managers of free/open source software development projects in understanding the social world surrounding free/open source software development.

A Quantitative Study of the Adoption of Design Patterns by Open Source Software Developers

Several successful projects (Linux, Free-BSD, BIND, Apache, etc.) showed that the collaborative and self-organizing process of developing open source software produces reliable, high quality software. Without doubt, the open source software development process differs in many ways from the traditional development process in a commercial environment. An interesting research question is how these differences influence the adoption of traditional software engineering practices. In this chapter we investigate how design patterns, a widely accepted software engineering practice, are adopted by open source developers for documenting changes. We analyze the development process of almost 1,000 open source software projects using version control information and explore differences in pattern adoption using characteristics of projects and developers. By analyzing these differences, we provide evidence that design patterns are an important practice in open source projects and that there exist significant differences between developers who use design patterns and who do not.

The Role of Modularity in Free/Open Source Software Development

Software design and development in Free/Open Source projects are analyzed through the lens of the theory of modularity applied to complex systems. We show that both the architecture of the artifacts (software) and the organization of the projects benefited from the paradigm of modularity in an original and effective manner. In particular, our analysis on empirical evidence suggests that three main shortcuts to modular design have been introduced and effectively applied. First, some successful projects inherited previously existing modular architecture, rather than designing new modular systems from scratch. Second, popular modular systems, like GNU/Linux kernel, evolved from an initial integrated structure through a process of evolutionary adaptation. Third, the development of modular software took advantage of the violation of one fundamental rule of modularity, that is, information hiding. Through these three routines, the projects can exploit the benefits of modularity, such as concurrent engineering, division of labor, decentralized and parallel development; at the same time, these routines lessen some of the problems posed by the design of modular architectures, namely imperfect decompositions of interdependent components. Implications and extensions of Free/Open Source projects experience are discussed in the conclusions.

The Impact of Open Source Development on the Social Construction of Intellectual Property

This chapter discusses the impact that open source software has on our perception and use of intellectual property. The theoretical foundation of the paper is constructionist in that it holds intellectual property to be a social construction that is created and legitimized by narratives. In a first step, the chapter recounts the narratives that are usually found in the literature to justify the creation and protection of intellectual property. The two most important streams of narratives are the utilitarian and the natural rights arguments. In a second step, the paper proceeds to the impact that the use of information and communication technology (ICT) has on the narratives of intellectual property. From there, the chapter progresses to a discussion of the impact of open source software on these narratives. It will be argued that open source software changes our perception of intellectual property because it offers evidence that some of the classical narratives are simplistic. At the same time it will become clear that open source is not a frontal assault on intellectual property because it is partly based on ownership of intellectual artefacts. The conclusion discusses how this change of narratives caused by open source software may reflect on our institutions, laws, and regulations of intellectual property.

Modeling the Free/Open Source Software Community

In this chapter we summarize the latest results from an ongoing study examining Free/Open Source Software (F/OSS) Development communities as self-organizing systems. Using publicly available data about projects, developers, and their relationships at F/OSS hosting sites such as SourceForge, we have found the existence of several power-law relationships, which is consistent with the contention that F/OSS communities are self-organizing systems. The F/OSS community is modeled as a collection of ad hoc, social networks consisting of heterogeneous agents, self-organizing into projects and clusters of projects. A computer simulation of the F/OSS community model is developed using SWARM, an agent-based simulation toolkit. Empirical data is used to parameterize the simulation, which in turn is used to investigate a social psychological model of communication and team effectiveness in F/OSS projects.