SINGULART - World's Leading Online Art Gallery
DockbarX - DockbarX is a standalone dock that groups and launches applications.
Magnus - Shazam for art
Synapse - Synapse is a semantic launcher written in Vala that you can use to start applications as well as find and access relevant documents and files by making use of the Zeitgeist engine.
Artmood - Rent or buy art - unique and amazing artworks
Gnome Do - Simple, sleek, swift, smart. Do. GNOME Do allows you to quickly search for many items present on your desktop or the web, and perform useful actions on those items. GNOME Do is inspired by Quicksilver & GNOME Launch Box.