Surely there is more than zero demand to dig out of the Trash Can an old FrontPage site and see how she look. (in whatever form that takes. ShitholeML.)
The specs and all that are out there, no? Find/replace? Some other crazy thing? ...but at least the behavior/protocol is all documented. Maybe?
I bet you could bang that shit out in Rust.
A bulletproof FrontPage server for your old home