| Centralized service | Alternative (NIPs/protocols) | Example apps |
|---|---|---|
| X (formerly Twitter) | NIP-10, NIP-18 | Amethyst, Ditto, Wisp/Dark Wisp etc. |
| YouTube | NIP-71 | VidStr, nostube |
| NIP-68 | Nostr Image Board, Polaroids | |
| Discord | Concord | Armada, Accordion |
| (unknown) | Foxhole |
This table will be updated over time.