In computer science, Object-based has two different, non compatible, senses:

A) A limited version of object-oriented programming where one or more of the following restrictions applies:

• there is no implicit inheritance
• there is no polymorphism
• only a very reduced subset of the available values are objects (typically the GUI components)

B) Prototype-based systems (i.e., those based on "prototype" objects which are not instances of any class)

See also

• Prototype-based programming
• Object-oriented programming