- Online collections by museum
- Alte Pinakothek: Tour the collection, c. 15% complete at Commons, still missing basic information and images, paintings should be sorted via sub-categories afterwards.
- British Museum: Museum Highlights, ~4,000 works, strongly incomplete at Commons
- Musei Capitolini: route through the rooms, almost complete
- Munich Glyptothek: Das Lächeln der Sphinx, ~200 works, 75% complete at Commons
- Louvre: Atlas database, ~40,000 works, almost complete at Commons
- Museu Nacional d'Art de Catalunya: collection at a glance, ~159 works, 8 categories at Commons
- Online collections by type of work