Parallels is well-known for its software that lets you run Windows apps on OS X computers. Now they are showing a free version that lets you run them on the iPad -- remotely.
Dean Takahashi of DemoBeat explains:
The free Parallels Mobile app will let you log into a Parallels account and then browse your Parallels-equipped computers at home. You can run the applications on those computers remotely, using the Parallels Desktop 6 for Mac software, which lets you run Windows or Mac apps simultaneously.
You could, then, in theory, "run" full AutoCAD on the iPad. (While Parallels Mobile is free, you still need to buy Parallels for your desktop computer, about $80.) Read more and view a video at Venture Beat.