Additionally, while it is not currently published (A/O 11/2021) it is worth noting that a list of MR software will be appended to an article in review: Sanderson E, Glymour M, Holmes MV, Kang H, Morrison J, Munafo M, Palmer T, Schooling CM, Wallace C, Zhao Q, Davey Smith G. Mendelian randomization. Nature Methods Reviews Primers. Under review.