Originally Posted by
terrain safe
Anyone recommend a decent file manager and photo viewer?
terrain safe,
Is one of the same question (i.e. are you looking for an image file manager and viewer) or two independent questions ?
If the former, then I'd strongly recommend looking at Adobe Lightroom. Yes, it unfortunately requires an Adobe Cloud subscription, but it's pretty much the best out there at the moment.
If you prefer one-off fees, then perhaps look at Phase One Capture One and Phase One Media Pro. Despite being made by a high-end camera manufacturer, they are not restricted to working with images produced by Phase One cameras.
I think both Phase One and Adobe do a demo version.
If the latter, then please explain what sort of "file management" you want that's not achievable natively in OS X ? (i.e. using Spotlight search etc.)