They’re clients on #Nostr it’s a protocol that’s decentralized and permission-less n censorship resistant! You can check out many other web clients as well, your social graph follows you throughout them all make sure you use an extension like Alby in order to sign in without putting your nsec in all of them, lmk if you’d like some guides or head to my site it’s under pleb university 🫡 SerSleepy.com