Thanks to the OP for taking me back 30 years to a training course on the Rational Rose UML toolkit [1]. Back then the sales pitch was "spend time drawing beauti

Thanks to the OP for taking me back 30 years to a training course on the Rational Rose UML toolkit [1]. Back then the sales pitch was "spend time drawing beautiful class diagrams in Rose and the toolset will generate most of the code". So called "roundtrip engineering". In a way it was the last gasp of the waterfall style heavyweight dev methodologies. The GoF Patterns [2] book and XP [3] arrived soon after. So no, UML isn't still cool. IMHO it never was cool. [1] https://en.wikipedia.org/wiki/IBM_Rational_Rose_XDE https://en.wikipedia.org/wiki/IBM_Rational_Rose_XDE [2] https://en.wikipedia.org/wiki/Design_Patterns https://en.wikipedia.org/wiki/Design_Patterns [3] https://en.wikipedia.org/wiki/Extreme_programming https://en.wikipedia.org/wiki/Extreme_programming