Not sure if this would count but I'd say some of the software that implemented S...

Not sure if this would count but I'd say some of the software that implemented Shlaer-Mellor OOA and code generation tools of the late 80s/early 90s might be included here too. Unfortunately can't find a great screenshot other than these:

https://www.edrawsoft.com/images/shapes/soft-shlaermellor.pn... https://www.edrawsoft.com/solutions/shapes/shlaer-mellor-ooa...