I saw Ace a couple of times on the first to KISS reunion tours. He hasn't been doing much since he left them the last time.
Fee Waybill was writing music for pop stars the last I knew. I can't remember what songs he was involved in lately, but I'm sure they ones you turned the station once you heard the beginning...yeah THAT kind of pop.
Ted is still doing the Ted thing, I saw Jack Blades as a commentator on some "100 best of..." VH1 show the other week. Tommy Shaw has been back with Styx for a long time now. Can't remember who else was in the band.
BOA is still playing shows in Arkansas. I opened for them decades ago in Little Rock, and a friend just opened for them last summer, so they're still around. Jim Dandy reunited with Hacksaw Reynolds back in the 80's. Shawn Lane was a guitarist in that band during the 80's too

Tommy Aldridge is still playing around but not much.
Slade? Good question. Haven't heard crap about them in a LONG time.
Sabbath, not sure where they are today but they rejoined Ozzy for a while in the 90's in the 2000's. I saw them in 2000 or 2001 and they were VERY good. It was tons better than I thought it was going to be.
Trower still tours. He just blew through my hometown about a year ago. He pops up about ever 5-7 years or so.