📱 Amethyst is an Android app for using Nostr as a social network. You can publish text posts, photos, videos, articles, polls, and voice notes; follow people; reply to, quote, repost, and react to posts; and send direct or group messages. It also supports Lightning tips, called zaps.

🍎 Damus is an iPhone and iPad app for Nostr. You can publish posts, follow accounts, and join conversations by replying, reposting, and reacting. It also supports direct messages and optional Bitcoin Lightning tips, known as zaps.

🌐 Nostr.social is a website for using Nostr in a browser. It provides a social-network interface where users can browse posts and, after connecting a Nostr account, publish posts and interact with others through replies and reposts. Nostr itself is the open protocol behind the service, rather than a single social-media company or app.