If not the world, GrabCAD is definitely dominating the press releases as it partnered with Autodesk and Fusion 360, partnered with Keyshot, partnered with Siemens PLM Solid Edge, released an Android version of its viewer, and now released Workbench out of beta all within a short period of time. (Details and pricing of Workbench can be found on their official site.)
Besides one noted hic-up with the Android viewer on Nexus 7 devices - which a fix is actively being worked, GrabCAD is definitely on the path to (CAD-)world domination. I don't know whether to be happy or worried about a new world order.
Source:
http://blog.grabcad.com/2013/07/grabcad-workbench-out-of-beta/
History:
http://www.engineering.com/DesignSoftware/DesignSoftwareArticles/ArticleID/5928/Collaborative-CAD-in-the-Cloud-from-Autodesk-and-GrabCAD-Starts-Today-with-Free-Trial.aspx
http://www.engineering.com/DesignSoftware/DesignSoftwareArticles/ArticleID/5904/GrabCAD-and-Autodesk-Team-Up.aspx