Coding Together at Scale: GitHub as a Collaborative Social Network Antonio Lima, Luca Rossi and Mirco Musolesi School of Computer Science University of Birmingham, UK fa.lima,l.rossi,
[email protected] Abstract ever, this service has much emphasis on its social features, GitHub is the most popular repository for open source as summarized in its motto “GitHub: social coding”. In fact, code (Finley 2011). It has more than 3.5 million users, GitHub is not simply offering a code hosting service, like as the company declared in April 2013, and more than its competitors had been doing for a long time, but also an 10 million repositories, as of December 2013. It has a easy-to-use and cheap (or even free in its basic version) on- publicly accessible API and, since March 2012, it also line tool for collaborative software development and many publishes a stream of all the events occurring on public features supporting the community of developers. For all projects. Interactions among GitHub users are of a com- these reasons, GitHub has successfully lowered the barrier plex nature and take place in different forms. Devel- to collaboration in open source. The importance of this col- opers create and fork repositories, push code, approve laboration platform seems to be increasing, as its founder code pushed by others, bookmark their favorite projects has plans to extend the use cases beyond software develop- and follow other developers to keep track of their activ- ment (Lunden 2013). At the same time, most of the data con- ities.