FfixestLaurent Bergé · Econometrics & causal inferenceIn-depth entryR package for fast estimation of OLS, GLM, Poisson, IV and difference-in-differences models with many fixed effects, clustered errors, multiple estimations and publication tablesGPL-3.0-onlyFreeOpen sourceLocalNov 2, 2026
PJProject JupyterProject Jupyter (NumFOCUS) · Notebooks & interactive computingIn-depth entryOpen-source computational notebook ecosystem: the .ipynb format, kernels for Python, R and Julia, JupyterLab and Notebook interfaces and JupyterHubBSD-3-ClauseOpen sourceFreeLocalSelf-hostedNov 2, 2026