Microblog.pub is an extremely lightweight single user blogging system which is ActivityPub compatible:
You can follow development at:
You can see the code at:
It's still in alpha testing and not recommended for self-hosting yet, but thought some of you may be interested in following the project.
Weird... the following is a bit wonky, perhaps because of Microblog being in alpha.
If you're having trouble following, the fediverse address to follow is dev AT microblog DOT pub. You may need to search for this address on the webclient to get a proper follow link.
mastodon.at is a microblogging site that federates with most instances on the Fediverse.