[Golden Eagle]

According to this, and other similar articles, Microsoft Election Guard was just released in 2019. Lots of details there, including partnering with current voting systems vendors, and even the Department of Defense:

Microsoft, Partners Unveil “ElectionGuard” Tools For Voters To Track Their Ballots

https://editions.lib.umn.edu/electionacademy/2019/05/07/microsoft-partners-unveil-election-guard-tools-for-voters-to-track-their-ballots/

[proust]

Confirmation of some of Stone’s claims.