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Zeitgeist based activity-history journal as a gnome-shell overview tab. It requires Zeitgeist to be installed.
Zeitgeist based jumplists for applications. The file-friendly approach puts access to your latest, most recent of favourite documents within direct reach of the application itself: just right-click on a launcher to view files and launch them in the application. Zeitgeist is required for the extension to work. If the menu of an application doesn't populate try to look for a Zeitgeist plugin for your application
Add 2 most recently used apps that are not favorited from within the last 30 minutes. This extension requires Zeitgeist to work