Scripts / utils for maintaining ports?

According to portscout, there are three individual maintainers who each maintain 1000+ ports: https://portscout.freebsd.org/index-total.html

I'm trying to wrap my head around how someone could do that. They have to use some utils to pull that off. Are those tools publicly available, either as packages, or scripts in a repo somewhere?

I am gradually developing a bit of tooling to maintain my own collection of ports: https://patmaddox.com/dir?ci=3d33b5b2dd2ebe39&name=ports/maintain  Perhaps one day it will evolve to a point where it's generally useful and shareable.

In the mean time, I would love to know how people are efficiently maintaining multiple ports: particularly those folks maintaining 1000+. Maybe I can just do what they do instead of re-constructing this myself.

Pat