New(ish) code!
When I started letting people set up virtual domains on my public server, I hacked out a few tools so that I could have sendmail deliver mail to the proper accounts in the virtual domains, and so that domain owners could manage the accounts. I don't use sendmail for the virtual domains anymore, but I do use some of these programs nevertheless.
There are a lot of packages floating around for virtual domain management, and I'm sure they are better than this, but these are good for quickly setting up accounts on virtual domains and maintaining them without too much banging of my head against the wall.
So, new(ish) code! No configure.sh, no documentation, so it's just like the wild west!