This page will be updated from time to time.
There is a really good launcher for doom and wads for it.
head on over to http://www.realm667.com/index.php/en/doom-launcher
you will also need a source port.
zdoom no longer under development
file dump of wads.
I did not make these.
I’m trying to find and upload wads in one location for easy access.
and the main game wads for the loading with the custom wads, which you can get from steam or gog.
more launchers at https://zdoom.org/wiki/Frontend