Though Evangeline had a small role in 2008's Hurt Locker and a Role in 2011's Real Steel, her biggest role outside of LOST is playing the flawless Tauriel in the Hobbit:Desolation of Smaug
MATTHEW FOX: JACK
The actor who was arguably LOST's leading star has also had the most legal trouble since the show! Aside from starring in the flop reboot of Speed Racer and in a handful of movies nobody has seen, Fox's legal troubles have kept him busy. He was arrested for DUI in May 2012, and allegedly punched a party bus driver in her vagina in 2011, though the charges were later dropped.
DOMINICK MONAGHAN: CHARLIE
When he wasn't having girls tickle his pickle over twitter and then posting the "receipts" on ONTD, Dominick had a large role in the short-lived ABC series FlashForward. He also created a wildlife documentary series called Wild Things, which debuted in 2012/
NAVEEN ANDREWS: SAYID
Naveen had roles in the 2012 TV series Sinbad and 2013 biopic Diana. He now plays Jafar in ABC's series Once Upon a Time.
TERRY O'QUINN: JOHN LOCKE
After playing one of LOST'S most interesting characters, O'Quinn has played characters on the TV series 666 Park Avenue, Falling Skies, Hawaii Five-O, and will star in this year's series Gang Related.
MAGGIE GRACE: SHANNON
Maggie Grace, who's character was killed off early, starred in Taken as Liam Neeson's daughter. She also played a vampire in Twilight: Breaking Dawn, and had a guest-starring arc on Californication. She will star in 3 movies this year.
IAN SOMERHALDER: BOONE
After LOST Somerhalder starred on some TV show about vampires.
YUNJIN KIM: SUN
Kim has starred on a TV Show called Mistresses
HAROLD PERRINEAU: MICHAEL
Perrineau has played roles in the TV series Sons of Anarchy, Wedding Band, and Blade. He also played roles in Zero Dark Thirty and Best Man Holiday and has two movies and a TV series coming out this year.
JORGE GARCIA: HURLEY
Garcia has guest-starred on shows like Fringe, Californication, Once Upon a Time, and Hawaii Five-O since being on LOST. He also starred in the short-lived mystery series Alcatraz.
MALCOLM DAVID KELLY: WALLLLLLLLLLLLLLLLLLLLLLLLT
Kelly has had roles in the TV Series Saving Grace and the Gigantic. He looks like this now:
DANIEL DAE KIM: JIN
After LOST, Dae Kim starred in Hawaii Five-O and has done voice work for the animated series The Legend of Korra and the videogame Saints Row.
ROB MCELHENNEY: ALDO, ONE OF THE OTHERS
McElhenney created and stars in one of the most hilarious TV shows ever, It's Always Sunny in Philadelphia
Holloway had a small but pivotal role in Mission Impossible: Ghost Protocol. He also had an awesome guest role in Community. He now stars in the CBS TV Series Intelligence.
EMILIE DE RAVIN: CLAIRE
De Ravin had roles in movies like Remember Me with Robert Pattinson. She now plays Belle on ABC's Once Upon A Time.
There's not really a source, since I assembled all the information from IMDB.
I meant to do this post last week since it was the anniversary of Lost's debut.