mstrbtr
It is called lotide. You can read about it here https://sr.ht/~vpzom/lotide/ , I guess there is also a 4th one called prismo, but the developer put down their project for various reasons, so i don't count it in.
From the information in the OG reply it seems pretty out of hand to me though, which makes the switch to Kbin that much easier as it's just plain better, and have full functionality to interact with microblogs. If Lemmy was the only one it would makes sense to fork it if needed, but now we have like 3 reddit-like fediverse platforms that we can choose between.
Personally I find Kbin more usable (while still being reddit-like) as it also has functionality letting you follow on normal microblogging content from Mastodon and other places, making it more intertwined with the whole fediverse.
Jesus this got massdownvoted by Lemmy tankies! xD Luckily there isn't the same impact on Kbin when viewing the OG comment.
@juergen I don't think he implied that he actually is a communist though lol