https://www.nostrapps.com/ for more clients built using Nostr. But don't copy your nsec into any of these except (for now) the.most reputable native phone apps: Amethyst, Damus, and Primal.

Check out the Spring browser on Android. It lets you log into Nostr apps without putting in your nsec.

Use the GetAlby browser extension to log into apps on desktop: https://getalby.com/