I'm only starting off with some of them, not all. But I will do the rest later though.
Cheers
Harry "The Hat" Gittes: Is still a comedian and magician, who owns two magic shops in North Carolina and New Orleans.
Frasier: Decided to become a psychologist instead of a psychiatrist and is also looking to become a therapist. No longer works in radio.
Cliff: Now works as a full time mail carrier.
Cheers continued
Woody: Teaches bartending for people who want to become bartenders themselves. No longer works at Cheers.
Sam: Works as a doctor. No longer a bartender and is interested in looking for a side job.
Diane: Now a singer and has made several albums which have made very high positions on numerous charts.
Rebecca: Semi-retired actress.
Frasier
Daphne: Now a dancer and singer.
Martin: Before he passed away, he was still retired and just enjoying life.
Niles: A very successful musician (piano and organ) who has had multiple chart topping albums in several different genres.
Roz: Has moved on from being a producer for Frasier's show to hosting her very own radio show.
Norm - Has a TV show where he talks about his life in Boston along with the problems he dealt with while he was there.
Carla - Still a waitress, but refuses to work at bars and instead chooses to work at diners along with small restaurants.
Frederick: Stepping into his father's shoes and is now a psychiatrist himself.
Lilith - Now a theater/broadway actress.
Bulldog: Still has his own sports radio show.
Frasier is now retired from being a psychologist and therapist. He lives with his wife Roz who is still hosting her own radio show and is no longer the KACL station manager. Kenny Daly ended up returning to the station manager job and is no longer a DJ.
Daphne has returned to her job as a physical therapist and is no longer a housekeeper due to Martin's death. She is still married to Niles and is still a singer and dancer on the side.
Niles is still a recording artist but is also a piano accompanist when not making music.