Matrix.org@waweic @krille Matrix is governed by the non-profit Matrix.org Foundation (https://matrix.org/foundation), which is effectively a standards body. As Krille said, there are loads of entirely independent implementations these days of all of the APIs. You are running on information 4+ years old.
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.