There&#x27;s OStatus and ActivityStreams, which are implemented by Diaspora and GNU Social along with several other decentralized networks. Hell, OStatus is even an (extremely vague, actually horrible but whatever) W3C spec.<p>edit: Ok, I was kinda wrong. Apparently it&#x27;s just a community hub hosted on w3 and not officially affiliated.<p><a href="https:&#x2F;&#x2F;www.w3.org&#x2F;community&#x2F;ostatus&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.w3.org&#x2F;community&#x2F;ostatus&#x2F;</a> <a href="http:&#x2F;&#x2F;activitystrea.ms&#x2F;" rel="nofollow">http:&#x2F;&#x2F;activitystrea.ms&#x2F;</a>