Amade Zombies was a project that never made it past open-beta. He gave it to anybody who asked.
It's main appeal was its infection feature. It was made before the release of the most recent L4B copy and ZAPT, so it was the only one with this feature. However it's really problematic. He went back over it and started almost from scratch later on, and made a bunch of special zombies. This was also abandoned because it was problematic and not as good as Iban and Rotondo's work IMO.
wait now whose side are you on
The core of it (Craftsmen_Zombies) works 100% fine, the problems were with the gruntchuckers and the old version (Zombies_Core, which was for some reason crap-on'd).
At the very least it has working "ZvP".
It was made with the idea of being just a bare-bones zombie mod. All it's got is a couple of options (scoring, PVP, sight radius, brick damage, infection) and the standard zombie.