This page captures the list of known ActivityStreams producers and consumers.
Please be aware that there are generally three different implementation methods to providing ActivityStreams: polling, push-based, and real-time/streaming.
When amending this list, please also link to the appropriate documentation or other relevant information for developers. If no public documentation exists, please make a note of this.
For each publisher, please link the name of the publisher to its home page, and also provide a direct link to an actual Activity Stream feed.
These are services you can create an account on and which then host an Activity Stream for you.
Independents who host their own personal site that supports Activity Streams, and what software they use.