How easy of use is when designing applications

Writing a code to create a diagram is a need for creating a complex diagrams,in my opinion and Star UML is the best way to do it. you create a class in your diagram by writing a simple line of code like this: expression ::= [ '<<' stereotype `>>` ] ClassName then you can add attributes to it as simple as this: attribute ::= [ '<<' stereotype `>>` ] name [':' type ] [ '[' multiplicity ']' ] [ '=' defaut-value ] and you can add relations between class by the following line : expression ::= [ '<<' stereotype `>>` ] [ visibility ] name that is all . you can create the most complex diagrams by learning just those 3 simple definitions,so the learning curve of StarUML is very short.

its easy to use, have multiple diagrams to design and you have multiple types to export your diagram