(This page is not yet complete and linked in -- suggestions welcomed)

Packaging tools in Linux, and more generally in *nix, and even wider, to Unix, and ultimately to IB (OS/2), Novell (Netware), and Microsoft (Windows) products are a vaired lot. We compile a few links here.

Another Linux compilation site

DistroWatch

Primarily RPM

Apt and RPM

Primarily Apt

Primarily pkgtool


... To add:
The BSD's
HP-UX -- Depots
Irix -- pgktool variant with rpm =like post scripts
SCO -- pgktool variant
Solaris -- pgktool