Miter Box is a set of tools designed to make accurate polymodelling quicker and easier.
i am searched thru local search and thru google - here on blenderartists is not represented this nice addon ( i am not author i just share link)
also i think another instrument the author is working on is worthy of mention
https://twitter.com/JohnKazArt/status/1638315444342857729?s=20
author contacts https://twitter.com/JohnKazArt