Playing the classics online


Hello ! I remember several years ago I would play street fighter games online using something that was called “kaillera” (not sure if that’s how it was really called lol), it was something that you used with the mame emulator and I remember there was something else called GGPO (but I remember i didn’t use that one that much). My question is, is there still something like that being used now ? Maybe there’s still people playing that way with some kind of similar platform ? Does anybody happen to know anything about that ? I’d like to give it a try to have some fun sometimes if something like that still exists, any links ? Thanks.