Activity Streams 2.0 W3C Recommendation 23 May 2017 This version: https://www.w3.org/TR/2017/REC-activitystreams-core-20170523/ Latest published version: https://www.w3.org/TR/activitystreams-core/ Latest editor's draft: http://w3c.github.io/activitystreams/core/ Test suite: https://github.com/w3c/activitystreams/tree/master/test Implementation report: https://github.com/w3c/activitystreams/tree/m