Mark AtwoodMastodon is not a covering implementation, it implements just enough of the AS spec to be a Twitter clone. If someone would just read the damn spec and then write a performant fully covering implementation, it could replace: Twitter, Youtube, Instagram, Facebook, Facebook Groups, Facebook Events, Disqus, Meetup, Reddit, Hackernews, Discourse, Slashdot, LiveJournal, etc. Basically everything that is not realtime chat.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.