kfynh

There is Goldfish, which was started with beeing some sort of TikTok alternative in mind. But it’s stuck in a very early stage and doesn’t seem to be developed anymore. If I remember correctly the Admin started it as a practice for themself to get more into Activity Pub.
They have a Mastodon account and a github page, maybe you can ask them there if they plan to develop it further. And since it is open source and can be forked by anyone and everyone can contribute to it, maybe someone will be found who is interested in continuing to work on the project.

On Goldfish’s github page I also found Vidzy by accident, where developement seems to be more active. However, I found no active instances so far where one could test it.

And this is where federation and interoperability becomes nice imo, because one doesn’t have to use pixelfed and can still get content from Pixelfed in their Mastodon feed, if they want to.

Say someone would like to see the content of just a few Pixelfed users, but doesn’t want to create an own Pixelfed account just for that, one can just to follow those specific Pixelfed users with their Mastodon account to see the Pixelfed posts in their Mastodon home timeline.

I think it’s also worth mentioning here that, since both pixelfed and mastodon belong to the fediverse, you can follow pixelfed users from mastodon and vice versa and see each others posts. :)
That’s why the whole carrying over the people you follow stuff is a thing.