The software development process has evolved with respect to the problems in developing large and complex applications. There is a paradigm shift towards collaborative development, which necessitates the need to evaluate this approach. A number of tools are used for collaborative software development (CSD) including social media and web 2.0 features. Collaborative development facilities are provided by IDEs and project hosting websites. In this paper, we present a survey of collaboratively developed projects and discuss challenges and issues in CSD. We analyze various issues of communication, coordination, support, lifecycle management and discuss their effect on software quality.