Thank you @macgirvin and @naturzukunft 
I noticed that @lanodan is keeping an ActivityPub Client-to-Server FAQ up-to-date and mentioning FedBox by @marius as possibly most-complete server, but no other clients mentioned. Did you go ahead with your client plans, @tonda? And there was a hackathon being planned Oct '20 with interest from @lain, @nightpool, @heluecht and @lanodan. Don’t know if that went ahead.