And then there’s always Frank, Jr., Jr., Leslie and Chandler.
Paris, Lindsay and Britney. Really only works if you want daughters that are both attention and actual whores.
Red, Amber, Green
Another sitcom:
Eric, Hyde & Fez
Donna, Jackie & Kitty
Sadly, I don’t think parents worry anymore about whether or not some word is an actual name before saddling their child with it. 
Santo Rugger: Yes, the Ideal Family.
John, Paul, and Ringogeorgepete.
Unman, Wittering and Zigo (although, of course, you’d never see Zigo)
Rock, Paper, and Scissors?
“Rock, stop beating up on Paper! You know it’s supposed to go the other way around!”
Oh, that’s very good. All lovely names in and of themselves, and your literary pals will get a kick out of it.
I have 3 cousins (all sisters) named after queens: Elizabeth, Catherine and Victoria. That would actually be cool for triplet girls.
Spartacus.
Enjoy,
Steven
I have good names for male quadruplets:
Felix, Leo, Oscar and Max
(Because Felix and Leo are both cats, Max and Oscar are Beerbohm and Wilde, Felix and Oscar are the odd couple and Leo and Max are the producers…so whichever way they pair up, it works.)
Female triplets: Harmony, Unity and Concord.
Dora, Torah, Tara (or Nora)?
One also cannot forget Brittany, Jeanette, and Eleanor.
If one would like to keep with a Disney theme: Belle, Jasmine, and Esmeralda should the girls all be of dark hair. Aurora, Cinderella, and Alice for those with fairer hair.
Also, on another Disney note, why not Flora, Fauna, and Merryweather?
Seriously though, if I were to name a set of my own, I probably would go with the following: Ange’lyn Rose, Celeste Jade, and Gabriella Dawn.
Assuming my dad was still alive, I would first trade one of the boys for a girl from another set of triplets who also wanted gender variation.
Then I would name them Vera, Chuck and Dave, just so that my dad could sing the song and have it be actually true.
Onea, Twoa, and Threea.
When I was younger, I always said my girls’ names would be: Faith Alexandra, Hope Victoria, and Charity Elizabeth.
I have 3 cousins (not triplets) named Tom, Dick, and Jim.
Matthew, Mark and Luke-John.
Amber, Pearl, and Opal.
Cassandra, Sibyl, and Pythia.
The trendy set: Jayden, Braden, and Aiden. Or Caiden, or any of those other randomly popular names.
John, Paul and George-Ringo.
Schlemiel, Schlimazel and Hasenpfeffer.