Yes. "The #Fediverse needs more developers."

"I ran through the 42 repos of every site in the Social Media category, adding the notably absent Diaspora, and I get a grand total of 76 active developers. Looking at the commit logs and pretty graphs I’d estimate that putting it in terms of full-time developers, we’re in the single digits."

https://fediverse.town/t/fediverse-needs-more-developers/134/2

Fediverse needs: More developers

For the facts, https://git.feneas.org/feneas/fediverse/-/wikis/watchlist-for-activitypub-apps is a great source to try and enumerate.

^{Fediverse Town}