1. Object Oriented Development (OOD) (Booch 1991,1994).
2. Object Oriented Analysis and Design (OOA/D) (Coad and Yourdon 1991).
3. Object Modelling Techniques (OMT) (Rumbaugh 1991).
4. Object Oriented Software Engineering (Objectory) (Jacobson 1992).
5. Object Oriented Analysis (OOA) (Shlaer and Mellor 1992).
6. The Fusion Method (Coleman 1991)..