Mailing the story:
Kupfer v204 (QuickLauncher) Released With New Gwibber Plugin, Lots More
Kupfer is a quick launcher like Gnome DO or Synapse. Kupfer exists for quite a long time and thanks to this, it comes with a huge list of plugins: you can use it to quickly access any browser's bookmarks, control Empathy or Pidgin, Evolution, Thunderbird, Google Search, Gmail support, image tools, Rhythmbox support, Tracker search and well... basically it has support for half the applications you can think of.