Trigraphy - Photo editing app that allows you to make mosaic/abstract looking art.
Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.
Dreamscope - Make and share 'deep dream' images using dozens of supplied styles or your own.
Musée du Louvre - Musée du Louvre is a one-stop destination for you to explore the historical and modern artwork.
Photomosh - Turn anything into a vaporwave
IconLover - Icon editor for Windows.