Ask OS X typography geeks: Best font manager?

For a wide variety of reasons, I am starting to have need to be able to bulk install / activate and deactivate / remove fonts from my system. I’d like to be able to do this by project. (I’m working on Project $FOO, I need to make sure the fonts are installed. I’m no longer working on Project $BAR. I should remove the fonts.)

I haven’t used a font manager in 15 years, and I’m sure the field has drastically changed in that time. Any of you have any recommendations?