Is there a way to bridge Matrix with ActivityPub? I see MXToot[1] as an option, but I'm hoping for something a little less Mastodon-specific. I'd like to be able to bridge Matrix with Mastodon, Hubzilla, Peertube, Pixelfed, and the other ActivityPub federated services that are popping up.

Would it be possible to get the Bifrost[2] to integrate with ActivityPub?

[1] https://github.com/ma1uta/mxtoot [2] https://github.com/matrix-org/matrix-bifrost