[vermaden]

Try Worker, it is as close to Directory Opus as possible.

https://www.tecmint.com/wp-content/uploads/2016/06/Worker-Fi...

Its available on FreeBSD so it must be available on Linux and macOS at least ... not sure about Windows.

[zmix]

If you are on Windows, then go for the real deal[1].

It's (also) ActiveX (generic scriptig host, COM objects from/with scripts, etc.) scriptable and fully configurable. Just like in the good ole' days.

[1]: https://gpsoft.com.au/