what fediverse software is similar to lemmy?

Also, in a now-deleted comment, someone had politely asked the admin some basic questions, to which the admin had replied, "whatever." When someone else asked the reason for such a rude reply, the admin essentially responded, "I'm a developer, communication is not my forte. Now, shut the fuck up."

P. S. I took the liberty to paraphrase the final response, as I don't remember the exact words used.