*Enterprise : You are a big company. This licence is for you and allow all your developers around the world to use DebugBar.
*Site : You are a web agency. This licence is for you and allow all your developers on this site to use DebugBar.
*Team : You are a project team. This licence is for you and allow all the project people to use DebugBar.
*Solo : you are a freelance developer. This licence is for you.