GerryChain.NET A .NET implementation of the ReCom Markov chain for redistricting, with parallelized proposal generation, to improve performance for heuristic optimization. ToyDown A simplified version of the Census Bureau's TopDown algorithm for adding differentially private noise to the 2020 decennial census release. Districtr VRA Dashboard Web-app that allows researchers, litigators, and citizens alike to draw plans and explore how effective they are for minority representation, under historical election data. Reconstructr Implementation of a reconstruction algorithm for recovering block level 2010 US Census microdata from aggregate-data released at the tract and block level.