Umple was a huge amount of work. The bidirectional nature of the text form and the graphical form is very impressive. However, it is fatally flawed system IMHO

Umple was a huge amount of work. The bidirectional nature of the text form and the graphical form is very impressive. However, it is fatally flawed system IMHO because it adopted wholeheartedly the doomed OOP paradigm, and when you see how many classes you end up using, it makes it hard to understand programs. But a very powerful project, and probably thousands of hours of work to build it. I would be very interested to know how many man-years were put into the program.