Strypey@rapnie great question! I've been looking for stuff like this for Dreamwidth. Is there anything at activitypub.rocks, or the #W3C Social WG that meets your needs?
Jonkman Microblog is a social network, courtesy of SOBAC Microcomputer Services. It runs on GNU social, version 1.2.0-beta5, available under the GNU Affero General Public License.
All Jonkman Microblog content and data are available under the Creative Commons Attribution 3.0 license.