Search suck on this site atm. If it has 'nostr' tag on github than it's nostr :) 

Which one are you looking for? I.e. here is nostr.build https://nostrapp.link/r/naddr1qqwxw6t5dp6kytnrdakj7mn8x448ytmwdaehgu3wvf6kjmryqgs2xwt8gtgkugyahmmdu7zsyjqcula4klmgmxnv8mnlyxnhyksn74grqsqqqad9atsaur