  Assessing the dependency graph (DG) of a software project offers valuable
insights for identifying its key components. Numerous studies have explored
extracting DGs and leveraging them for various analyses, including security and
bus factor calculations. However, there is a lack of user-friendly tools for DG
extraction, and no comprehensive DG datasets from open-source projects are
available. This study introduces RefExpo, an easy-to-use DG extraction tool
supporting multiple languages like Java, Python, and JavaScript. Based on the
IntelliJ plugin SDK, RefExpo ensures compatibility with various project
structures and technology versions. We also provide a dataset of 20 Java and
Python projects, with plans to expand upon request. To validate RefExpo we
focused on Java and Python. Our tests showed RefExpo achieving 92% and 100%
recall on micro test suites Judge and PyCG for Python and Java, respectively.
In macro-level experiments, RefExpo outperformed existing tools by at least 31%
and 7% in finding unique and shared results. You can access the source code of
our tool from our replication package1. The installable version of RefExpo is
available on the IntelliJ marketplace. Additionally, a short video describing
its functionality can be viewed here: https://youtu.be/eCnPUlj6YgA.
