Tosh

Adds a static bar at the bottom of every page of your website. Which displays the latest 20 BuddyPress Activities and rotates threw them.
This way all your members/visitors can see at a glance all the latest activity on your website!
There are also buttons so you can go forward and back in the activity stream and a close/open button in the bottom right.

BuddyPress Activity Stream Bar

Adds a static bar at the bottom of every page of your website. Which displays the latest 20 BuddyPress Activities and rotates threw them.

Matthias Pfefferle

ActivityStreams (<a href="http://www.activitystrea.ms" rel="nofollow ugc">activitystrea.ms</a>) support for your WordPress-blog
ActivityStreams is an open format specification for activity stream protocols, which are used to syndicate activities taken in social web applications and services, similar to those in Facebook’s Newsfeed, FriendFeed, the Movable Type Action Streams plugin, etc.

ActivityStream extension

ActivityStrea.ms feeds for WordPress (Atom and JSON(-LD))

BuddyPress Activity Stream Bar vs ActivityStream extension