In QNX they call them resource managers because they perform the same function as a device driver in a monolithic OS such as Linux but they run in their own address space like a POSIX process and behave like daemon.
… except if they are needed for real-time tasks, in which case they must run in the kernel. QNX propaganda has a certain divergence with the source, at least last time we looked at it. And given their pace of innovation, I suspect not much has changed.
Take-away: don’t get distracted by commercial PR. And yes, just call drivers “drivers”, as Björn suggests
Gernot