Abstract:Industry uses Open Source Software (OSS) to a greater and greater extent. We have defined four industrial OSS roles; OSS provider, OSS integrator, OSS participant and Inner Source Software (ISS) participant. Based on these four roles we have performed a survey in the ITEA COSI project. We provide initial answers to what motivates companies to undertake these roles, what are the advantages and challenges of undertaking them, and which development practices they use while undertaking these roles.