Mastodon is a free, open-source social network, written in Ruby. A decentralized alternative to commercial platforms, it avoids the risks of a single company monopolizing your communication. Pick a server that you trust — whichever you choose, you can interact with everyone else. Anyone can run their own Mastodon instance and participate in the social network seamlessly.
InstallAUR package, you can also use git version, install AUR package.
It could be easier to run mastodon in Docker