= ActivityPub =
 * https://en.wikipedia.org/wiki/ActivityPub
 * https://en.wikipedia.org/wiki/Fediverse
 * https://blog.joinmastodon.org/2018/06/how-to-implement-a-basic-activitypub-server/
 * https://en.wikipedia.org/wiki/Friendica
 * https://en.wikipedia.org/wiki/Mastodon_(software)