QScored: An Open Platform for Code Quality Ranking and Visualization

Though abundant source code repositories are available on code repository hosting platforms, their detailed code quality information is not available readily. Software engineering researchers often need to select a set of high-quality repositories. Despite the code quality is an important concern for repository selection, the lack of this information makes researchers depend on alternatives such as the number of issues and the number of stars associated with repositories. Furthermore, practitioners expect user-friendly visual ways to assess the quality of their projects during the evolution of the codebase without putting a considerable effort. We propose an open platform QScored to fill the gap for both researchers and practitioners. The platform hosts detailed code quality analysis information for a large number of repositories (currently more than twelve thousand containing more than 200 million LOC), computes quality score and assigns relative ranking of the hosted repositories based on detected architecture, design, and implementation smells, as well as offers a comprehensive set of visualization aids for code quality aspects. Furthermore, the platform provides REST APIs to search repositories based on their code quality scores and ranking of hosted software projects.Video of the demo: https://youtu.be/-IgvjGV-2X0.