I still have Steel Panthers, but, enjoy the fun of playing Face to face with a friend.
Squad Leader is still around. I have a copy of Panzer Leader and Panzer Blitz sitting at my feet as I type.
Shrapnel Games has Steel Panthers now- both the World War 2 and modern versions and it’s available as a (legit) free download. They get updated (including new scenarios and campaigns) every year and is still very much a going thing.