Deliverance Software concentrate on the development of real-time design and visualisation tools. WalkAbout3d is a real-time visualisation solution for SketchUp. We have also an iPhone/iPad app - Walkabout3d Mobile, for viewing visualisations produced by Walkabout3d. QuickPano is an iPhone app which lets users open QuickTimeVR files directly on their iPhone; we believe this is currently the only way of viewing these files on an iPhone.
We are very excited about our newest product, ZoomNotes which is a handwriting app for iPad and iPhone. Uniquely for apps of this type, it lets you zoom in and out without constraint, allowing you to work at a variety of scales. It has evolved out of an in-house tool we have been using to aid the early stage design of our software, but we see its application as far more general than that.