Nostr

Use Amethyst on Android to access Nostr features including private messages, zaps, and live streams.

Nostr Events Monitor displays Nostr events in a dark-themed web app, providing a dashboard for monitoring activity on the protocol.

Nostr badge events of kind 8 can be created and issued with Badger, a client for the protocol.

Run Ephemerelay as a Nostr relay that does not retain past events, according to its project description.

Manage Conduit storefront listings, invoices, order fulfillment, and conversations with buyers.

Learn about the Nostr protocol through Building Nostr, a guide written for developers.

AKA Profiles offers access to profiles without requiring an identity, with a Nostr extension option.

Cassette is described as portable storage for Nostr events, but the supplied page gives no further details.

Create or join a Connect Four game on connect4.xyz, with options to share the game link and results.

Set up a NIP-05 identifier at your own domain or choose one of the service’s provided domains.

Fevela offers a Nostr social client with an interface described as helping users manage their attention.

Save social bookmarks with Deepmarks, a Nostr client that supports permanent archives funded through Lightning.

A question-and-answer community built on Nostr, designed to make content discovery easier.

Angor presents itself as a decentralized crowdfunding protocol built on Bitcoin for funding projects.