"Mixer" is a real-time collaborative work add-on developed by Ubisoft Animation Studios. Since we last reported on it back in August 2020, the now feature-rich add-on has come out of Alpha and has added Blender 2.92 support.
The Ubisoft Mixer 1.0 release includes Blender armature support. So you and your peers can edit collaboratively with a scene and your character doesn't get lost on the other client. ???
— Fire (@iFiery) April 22, 2021
This latest release includes armature and geometry nodes support, which round up the other features that addon has accumulated since our last post, including synchronization of animation data and scene annotations.
The addon is now backed up by a full documentation page and video tutorials, which you can find on the links below along with the addon itself: