R packages

Packages are sorted in alphabetical order by name. If the installation says remotes::install_github<name>, then you first need to install the remotes package with install.packages("remotes"). Please note that some installation paths have been split across lines to preserve table formatting in Markdown. Make sure they are in the same line when you copy them across to your own R console, for example, remotes::install_github("asheshrambachan/HonestDiD"). Package documentation is identified in the Website column.

Name	Installation	Website	Package by	Reference paper
`bacondecomp`	`install.packages` `("bacondecomp")`	Link	Evan Flack; Ed Jee	Andrew Goodman-Bacon (2021). Difference-in-differences with variation in treatment timing. Journal of Econometrics.
`did`	`install.packages("did")`	Link	Pedro H.C. Sant’Anna; Brantly Callaway	Brantly Callaway, Pedro H.C. Sant’Anna (2020). Difference-in-Differences with multiple time periods, Journal of Econometrics.
`did2s`	`install.packages("did2s")`	Link	Kyle Butts	John Gardner (2021). Two-stage differences in differences; Kirill Borusyak, Xavier Jaravel, Jann Spiess (2021). Revisiting Event Study Designs: Robust and Efficient Estimation; Liyang Sun, Sarah Abraham (2020). Estimating dynamic treatment effects in event studies with heterogeneous treatment effects. Journal of Econometrics; Brantly Callaway, Pedro H.C. Sant’Anna (2020). Difference-in-Differences with multiple time periods, Journal of Econometrics; Jonathan Roth, Pedro H.C. Sant’Anna (2021). Efficient Estimation for Staggered Rollout Designs.
`didimputation`	`install.packages` `("didimputation")`	Link	Kyle Butts	Kirill Borusyak, Xavier Jaravel, Jann Spiess (2021). Revisiting Event Study Designs: Robust and Efficient Estimation.
`DIDmultiplegt`	`install.packages("DIDmultiplegt")`	Link	Shuo Zhang	Clément de Chaisemartin, Xavier D’Haultfoeuille (2020). Two-Way Fixed Effects Estimators with Heterogeneous Treatment Effects. American Economic Review.
`DIDmultiplegtDYN`	`install.packages("DIDmultiplegtDYN")`	Link	Clément de Chaisemartin; Diego Ciccia; Xavier D’Haultfoeuille; Felix Knau; Mélitine Malézieux; Doulo Sow	Clément de Chaisemartin, Xavier D’Haultfoeuille (2024a). Difference-in-Differences Estimators of Intertemporal Treatment Effects, Review of Economics and Statistics; Clément de Chaisemartin, Diego Ciccia, Xavier D’Haultfoeuille, Felix Knau, Mélitine Malézieux, Doulo Sow (2024c) Event-Study Estimators and Variance Estimators Computed by the did_multiplegt_dyn Command.
`DRDID`	`install.packages("DRDID")`	Link	Pedro H.C. Sant’Anna; Jun Zhao	Pedro H.C. Sant’Anna, Jun Zhao (2020). Doubly robust difference-in-differences estimators, Journal of Econometrics.
`etwfe`	`install.packages("etwfe")`	Link	Grant McDermott	Jeffrey Wooldridge (2021). Two-Way Fixed Effects, the Two-Way Mundlak Regression, and Difference-in-Differences Estimators.. Working Paper.
`fixest` with `sunab()` function	`install.packages("fixest")`	Link	Laurent Bergé	Liyang Sun, Sarah Abraham (2020). Estimating dynamic treatment effects in event studies with heterogeneous treatment effects. Journal of Econometrics.
`gsynth`	`install.packages("gsynth")`	Link	Yiqing Xu; Licheng Liu	Yiqing Xu (2017). Generalized Synthetic Control Method: Causal Inference with Interactive Fixed Effects Models. Political Analysis.
`HonestDiD`	`remotes::install_github` `("asheshrambachan/HonestDiD")`	Link	Ashesh Rambachan; Jonathan Roth	Ashesh Rambachan, Jonathan Roth (2021). An Honest Approach to Parallel Trends.
`staggered`	`install.packages("staggered")`	Link	Jonathan Roth; Pedro H.C. Sant’Anna	Jonathan Roth, Pedro H.C. Sant’Anna (2021). Efficient Estimation for Staggered Rollout Designs.
`synthdid`	`remotes::install_github` `("synth-inference/synthdid")`	Link	David Hirshberg; Stefan Wager; Dmitry Arkhangelsky; Susan Athey; Guido Imbens	Dmitry Arkhangelsky, Susan Athey, David Hirshberg, Guido Imbens, Stefan Wager (2021). Synthetic Difference-in-Differences. American Economic Review.
`pretrends`	`remotes::install_github` `("jonathandroth/pretrends")`	Link	Jonathan Roth	Jonathan Roth (2021). Pre-test with Caution: Event-study Estimates After Testing for Parallel Trends.
`TwoWayFEWeights`	`install.packages("TwoWayFEWeights")`	Link	Clément de Chaisemartin; Diego Ciccia; Xavier D’Haultfoeuille; Felix Knau; Doulo Sow; Shuo Zhang	Clément de Chaisemartin, Xavier D’Haultfoeuille (2020). Two-Way Fixed Effects Estimators with Heterogeneous Treatment Effects. American Economic Review; Clément de Chaisemartin, Xavier D’Haultfoeuille (2021). Two-way fixed effects regressions with several treatments.
`YatchewTest`	`install.packages("YatchewTest")`	Link	Clément de Chaisemartin; Diego Ciccia; Xavier D’Haultfoeuille; Felix Knau; Doulo Sow	Yatchew (1997), de Chaisemartin and D’Haultfoeuille (2024b)