Dataset for the paper "What's Inside a GitHub Repository? An Empirical Study on the Contents of 10K Projects?" ICSME/NIER 2026

Dataset for the paper "What's Inside a GitHub Repository? An Empirical Study on the Contents of 10K Projects?" submitted to ICSME/NIER 2026. We relied on the GitHub REST APIs for Git trees to collect all files, directories, and extensions from the selected repositories. We collected data for the last 10 years, considering the snapshots from 2016, 2021, and 2026. For 2026, we analyzed the 10,000 repositories comprising over 10.9 million files, 1.9 million directories, and 14,770 distinct extensions. Next, we analyzed the repositories from the 2026 dataset that existed in 2021 and 2016, totaling 6,371 and 2,591 repositories, respectively.