Obviously Lemmy, Mastodon, Pixelfed, etc. are federated decentralized equivalent to their centralized counterparts, but what is the counterpart in the fediverse to TikTok? It is a dominant app for millions of people, and as far as I can tell the closest thing is Peertube, but isn’t that more of a YouTube equivalent? Does it not exist because the bandwidth and storage costs are just too great? Or because the algorithmic nature of content selection is inherently anti-fediverse in some way? Clearly many people choose to interact with each other this way, but it seems like a gap in the fediverse and I was wondering why.
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.