Unified Modeling Language Tools are software applications which are compatible with some or entire semantics and notation related to UML. As far as software engineering is concerned, modeling must be involved. That’s why UML remains the standard industry overall-purpose language. UML tools are used either components or plugins by software programs that do not completely feature UML. However, they support UML functions partly. To create and edit UML diagrams, UML tools is all you need. Software developers draw object-oriented diagrams with the help of UML notation. Again, software developers as well as engineers use UML tools to evicting the system’s design blueprint through a simple diagram. For that matter, the diagram is represented by the system’s main elements which include activities, interfaces and different components. The diagram normally shows either the behavioral or structural views of the system model. Moreover, UML tools are used in round-trip engineering in generating code from models as well as models from code. This process is called reverse engineering. Again, UML tools works to ensure that model and the code remain semantically consistent with each other. As that’s not enough, UML tools enable users to produce great documents and impressive reports and to modify a system to a multi-user scale based on ever-changing needs.