if you count all the projects that migrated protocols over the years then there’s a fair bit of “content” in the fediverse that predates not only activitypub (what people refer to as “fediverse” today) but also some proprietary platforms like google+ (and in this specific case have outlived them)
GNU Social, it predates the Fediverse itself
i was looking at an old archive of mastodon.social and apparently mastodon was made to compete with gnu social
if you count all the projects that migrated protocols over the years then there’s a fair bit of “content” in the fediverse that predates not only activitypub (what people refer to as “fediverse” today) but also some proprietary platforms like google+ (and in this specific case have outlived them)