Pixelfed, an alternative to Instagram, has matured over the years. One of its biggest, most powerful features is about to touch down - federated groups. And it will be compatible with Lemmy and Kbin.
If you look at it they have "posts" and announcements as well as an area to submit group resources
A community dedicated to fediverse news and discussion.
Fediverse is a portmanteau of "federation" and "universe".
Getting started on Fediverse;
If you look at it they have "posts" and announcements as well as an area to submit group resources