Adrian McEwen@ntnsndr @kissane Have you seen https://cooperative.computer/? (It's "only" Nextcloud and Matrix, which is why I didn't suggest it earlier)
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.