Been playing around with 0xchat - nostr:nprofile1qqs9ajjs5p904ml92evlkayppdpx2n3zdrq6ejnw2wqphxrzmd62swspzemhxue69uhkummnw3ezumt0w46x7m3wv3jhvqgkwaehxw309aex2mrp0yhxummnw3ezucnpdejqzrthwden5te0dehhxtnvdakqhm2uug - good way to bake in encryption on top of the existing Nostr client and relays. Good to protect metadata and to add privacy layers to Nostr. Secret chat allows for encrypted DMs which adds perfect forward secrecy. Also comes with an e-cash wallet.