FlexLM --- certainly gave me a bit of nostalgia from all the time I spent on it as a cracker few decades ago... I guess it's still found on very expensive/specialist software which hasn't become entirely service/cloud-based.
I think Autodesk still uses it. I vaguely recall running into some trouble with the FlexLM service and Autodesk Inventor when I still worked as a Windows admin/helpdesk monkey.
Yes they still do, at least for floating licenses, I'm running a FlexLM server for our lab with several Autodesk floating licenses on it. MATLAB also uses it, and so do many others scientific software packages (e.g., ANSYS).
