University of Mons (Belgium) and Radboud University (Netherlands) researchers · 2026-03-01
Large-scale empirical study analyzing 267K+ GitHub Actions workflow change histories from 49K+ repositories (Nov 2019 to Aug 2025). Reports that Decan et al. found GHA adoption rate of 43.9% in 68K GitHub repositories by January 2022.
Why read: Primary source for the 43.9% CI adoption figure and comprehensive context on how GitHub Actions workflows evolve over time.
Kinsman et al., Empirical Software Engineering · 2023-09-26
Academic study finding 1,489 out of 5,000 most popular repositories (almost 30%) adopt GitHub Actions. Adoption leads to more PR rejections and more communication.
Why read: Provides a complementary measurement of GHA adoption among top repos and documents CI's impact on development processes.