In terms of technology? Sure. There’s projects that are considered “Fediverse” and don’t use ActivityPub.
… But the more important question isn’t if it’s “Fediverse”. Sure it is. It’s a federated network. The important question is is it part of the Indie Web, since the Fediverse started as a smaller part of the bigger indie web movement, and then the answer is a big no, because it’s a VC-owned for-profit.
In terms of technology? Sure. There’s projects that are considered “Fediverse” and don’t use ActivityPub.
… But the more important question isn’t if it’s “Fediverse”. Sure it is. It’s a federated network. The important question is is it part of the Indie Web, since the Fediverse started as a smaller part of the bigger indie web movement, and then the answer is a big no, because it’s a VC-owned for-profit.