CUBASE SL2, NUENDO2 (MY PICK), SONAR (WHICH IS TRASH), DIGITAL PERFORMER, LOGIC AND MANY OTHERS. THESE PROGRAMS ARE "EXPENSIVE"
I DONT LIKE SONAR FOR ONE REASON YOU CAN ONLY USE ONE HARD DRIVE WITH IT. IN ANY BIG STUDIO THEY RECORD THE AUDIO IS ON ONE HARD DRIVE AND THE PROGRAMS ARE ON ANOTHER. THIS HELPS THE COMPUTER RUN SMOOTHER WITH LESS PROBLEMS. IN MY STUDIO THATS MY SET UP (I HAVE FOR HARD DRIVES) AND MY COMPUTER RUNS SMOOTH.