GoCity: Code City for Go

Go is a statically typed and compiled language, which has been widely used to develop robust and popular projects. As other systems, these projects change over time. Developers commonly modify the source code to improve the quality or to implement new features. In this context, they use tools and approaches to support software maintenance tasks. However, there is a lack of tools to support Go developers in this process. To address these challenges, we introduce GoCity, a web-based implementation of the CodeCity program visualization metaphor for Go. The tool extracts source code metrics to create a software visualization in a automated way. We also report usage scenarios of GoCity involving three popular Go projects. Finally, we report the feedback of 12 developers about the GoCity of their projects.