What are the wizard controllers in VisualForce and how they are different from other controllers?

They are able to manage multiple pages and state across each page that is not possible to manage by other simpler controllers in VisualForce. A VisualForce controller defines a complete set of instructions that specify what can happen when the user interacts with different components available on VisualForce pages. These components may be buttons, links, or any other action item. There are three popular types of Visual Force Controllers in Salesforce. These are Standard Controller, Custom Controller, and the Controller Extensions.