Well, she's basically still living in a 90s sitcom on ABC Family on "Melissa and Joey."
Aunt Hilda was on a bunch of D-list reality shows, and now is a couple voices on Disney's Phineas and Ferb.
Aunt Zelda was on Lost as Kate's mom, and now she's a waitress on Under The Dome.
Salem, AKA Nick Bakay wrote Mall Cop, Zookeeper, and more movies... and is also a producer!
The high school peeps
Harvey basically fell off the planet... and apparently plays guitar in a bluegrass duo now.
Libby has been in a couple episodes of Castle, Bones, and ER.
Principal Willard Kraft is Gene Parmesan on Arrested Development!
Valerie was on Ben and Kate before it was canceled too early, but also Bring It On, duh.
The college years
Morgan was like, crazy awesome in the 90s... but since Sabrina, hasn't really done anything of note.
Roxie voiced some of the Bratz characters, but now mostly concentrates on a boutique she opened in LA.
First of all, no wonder Sabrina ended up with Josh and not Harvey, just based on looks alone! But he's really not any more successful. He hasn't done anything great since Sabrina [WHY!?!?!].