Yes, it’s fantastic: https://pixelfed.social

Here’s the dev’s links:

https://mastodon.social/@dansup

https://pixelfed.social/dansup

I can lose hours just browsing everyone’s nature photography.

If you’re on iOS, decent apps for it are Tusker and Vernissage… and maybe Mona or Ivory, but they aren’t built for it so the compatibility has a snag here and there.

Tusker uses a traditional Mastodon interface, while Vernissage is minimal-first with a main view of just photos with nothing else.