Are there any bands like system of a down?

Currently there are two separate projects made by the former members of System of a Down- Scars on Broadway (S.o.B) which is run by Daron Malakian (former S.O.A.D guitarist/vocalist) and John Dolmayan (S.O.A.D drummer), and Serj Tankian's solo albums. I highly recommend that you check out Scars on Broadway as it has so much of the classical System of a Down feeling (the lyrics, beat and guitar will be a dead giveaway.) On another note, you may want to check out Vampires on Tomato Juice, as well as the project artist No-one on YouTube. They have made themselves sound a lot like System of a Down, and I'm sure you will enjoy.