4 language families
Most of my language projects are connected to a single conworld which is the setting for a graphic novel project i've been picking at off and on for several years. The world still doesn't have a name. It's a sort of alternate Earth. My interest is mainly in culture fiction, so the biology and cosmology of this alternate Earth are the same as our own, but all the human cultures are fictional.
I may also keep non-world-related language stuff here too instead of making a new universe for them. Odds are they'll get folded into the greater world project anyway.