Certainly, but KDE activities are overtly complicated and lack a unifying metaphor. Last time I checked they were neither virtual desktops nor IDE workspaces;

Certainly, but KDE activities are overtly complicated and lack a unifying metaphor. Last time I checked they were neither virtual desktops nor IDE workspaces; it was hard to think of an activity as a container that holds together all the instances of data related to a project. They interacted with open applications in weird ways, rather than having one instance of the application associated always to the same activity as you'd expect.