The Steelers are currently about $8 million and change over the cap:
Releasing Levi Brown will save $6 million and change, meaning that the Steelers probably only need one move to get into compliance. Of course, they will also need to create additional room to resign free agents, sign any outside free agents, and sign their own picks and sign draft picks, but hopefully this year they will be able to avoid the heavy restructuring that has hurt them in the past.
Also notable on this list is how much space some other teams have. There are 13 teams with over $20 million in cap room, including the Ravens.