From the “Soon to be in master” files, comes a screenshot depicting two new QML data components from the org.kde.activities.models package - ActivityModel and ResourceModel

KArl

Both are available as standard C++ and QML models. The ActivityModel does just what the name says - lists activities, while ResourceModel is more fun - it lists the resources opened by a specific application, or those tied to a specific activity, … and it can order by the score, recentness …