I use and love nostr:npub1048qg5p6kfnpth2l98kq3dffg097tutm4npsz2exygx25ge2k9xqf5x3nf (dev is nostr:npub107jk7htfv243u0x5ynn43scq9wrxtaasmrwwa8lfu2ydwag6cx2quqncxg).

That’s said, give that this is Nostr, there are several clients that support creating and publishing long form notes.

nostr:npub1yzvxlwp7wawed5vgefwfmugvumtp8c8t0etk3g8sky4n0ndvyxesnxrf8q is another popular client for long form notes.