Supplementary material for the articule "Mutation Testing in the Wild: Findings from GitHub" submitted to the Empirical Software Engineering Journal. It includes: Literature_search_for_mutation_tools_2018-2021.xlsx. This document contains the papers found in the search for mutation testing tools performed between 2018 and 2021. Mutation_tools.xlsx: This document includes the 127 mutation testing tools identified in our study along with tables and graphs. Repositories_raw_data.xlsx: All repositories data mined from Github as evidence of use of the top 10 mutation tools analyzed in our study. In addition, tables with calculations and graphs used in our work are included. Search_strings_mutation_tools.xlsx: The search strings used to look for repositories using each mutation tool in Github.