The use of open-source software (OSS)--readable software source code that can becopied, modified, and distributed freely--has expanded dramatically in recent years. The number ofOSS projects hosted on SourceForge.net (the largest hosting Web site for OSS), for example, grewfrom just over 100,000 in 2006 to more than 250,000 at the beginning of 2011. But why are someprojects successful--that is, able to produce usable software and sustain ongoing development overtime--while others are abandoned? In this book, the product of the first large-scale empirical studyto look at social, technical, and institutional aspects of OSS, Charles Schweik and Robert Englishexamine factors that lead to success in OSS projects and work toward a better understanding ofInternet-based collaboration. Drawing on literature from many disciplines and using a theoreticalframework developed for the study of environmental commons, Schweik and English examine stages ofOSS development, presenting multivariate statistical models of success and abandonment. Schweik andEnglish argue that analyzing the conditions of OSS successes may also inform Internet collaborationsin fields beyond software engineering, particularly those that aim to solve complex technical,social, and political problems.

The power of openness and Internet-based collaboration. The importance of open-source software commons -- What we know about open-source software commons : academic research and theory. The ecosystem ; The developer ; Technological and community attributes ; Institutional attributes -- Our empirical studies of open-source software commons. The OSGeo case : an example of the evolving OSS ecosystem ; Defining open-source software success and abandonment ; What can SourceForge.net data alone tell us about open-source software commons? ; Filling gaps in our data with the survey on free/libre and open-source success ; Answering the questions raised in Part II ; Putting it all together in multivariate models of success and abandonment ; Thinking about Part III : a review of our epirical research -- Conclusions. Our study in perspective.