For the most part, you can find a shipload of SWAT 3 modifications and the like at "SWAT 3 Reunited": http://www.swat3reunited.com/ , courtesy of Dazed and Confused Gaming. You will need to register in order to access content.

As I already had SWAT 3 installed prior to the GOG release and played it religiously on my Windows 98 machine, the number one mod of interest for you guys should be SWAT 3 Last Resort. It allows SWAT 3 to load up in resolutions greater than 1024x768, but also serves as a very handy launcher, especially for loading mods. Reunited seems to be the only place to get it now since the original site folded up.

Awesome link! Sounds like I should get GOG's SWAT 3 so I can finally put my disc to safety.

Thanks for info! I went to download the mods and you don't actually need to register to download it.