I've never encountered UML in the wild, but could say a few good words for SysML, which is built on top of UML.
Working on embedded software / hardware projects I've found SysML to be quite useful for systems design and documentation. Mostly BDD, IBD, Sequence, and State Machine diagrams. Parametric diagrams will probably come in handy at some point, as well.
SysML users tend to be in less vocal industries, especially those making expensive expensive hardware with lots of up-front design eg. defense, aero, medical, etc. I expect we'll keep using it until something better comes along.
Working on embedded software / hardware projects I've found SysML to be quite useful for systems design and documentation. Mostly BDD, IBD, Sequence, and State Machine diagrams. Parametric diagrams will probably come in handy at some point, as well.
SysML users tend to be in less vocal industries, especially those making expensive expensive hardware with lots of up-front design eg. defense, aero, medical, etc. I expect we'll keep using it until something better comes along.