I've ried out using nostr with:
Iris
Snort
Nostur
Damus
Primal
Nostrudel
Satellite
Amethyst
Mutiny
npub. cash
Minibits
Citrine
Amber
Start9 relay
nostr. build
zap. store
Zapstream
zap wiki
Shipyard
Highlighter
Iefan stuff.. plus more I can't remember