Supporting information for the following article: Liu Y, Kale A, Althoff T, Heer J. Boba: Authoring and Visualizing Multiverse Analyses. arXiv preprint arXiv:2007.05551. 2020 Jul 10. The supplemental material includes: * A PDF file containing additional methodology details and figures * Source code for the examples and case studies in the paper Boba is an open-source project and we will continue to improve it. The source code in this repository corresponds to the version when the paper was written, but may not be the most up-to-date version. While Boba is written in Python and should be cross-platform, the zip file of source code contains bash scripts that only work on MacOS (and perhaps Linux).