On its official blog site, Citrix has been talking this week about Project Braeburn, calling it "the coolest app that doesn't work on the iPhone...yet?" Braeburn is Citrix's codename for its attempt to build a Citrix Receiver for iPhone to allow access to Windows applications.

"Virtually millions business critical application run today on Citrix XenApp, and soon enough all of them will be at your fingertips in an iPhone near you," writes project architect Gus Pinto.

Meantime here's Colin Warren's "Bridging the Gap" blog entry:

"Since the dawn of time (in Personal Computer time at least) there has been a clear separation - or should that be chasm? - between PC users and Apple users.  The differences are not only philosophical there are practical differences.

Each of the OSes has it its own quirks and usability paradigms.  The classic example has always been the mouse.  Apple users have always been happy with a single button, while PC users have always wanted more buttons...

The iPhone has introduced yet another paradigm, with its all touch screen design.

The Citrix Receiver for iPhone is being created to allow access to windows applications, through an Apple device which uses this new user experience.  As the designers and builders of this software we need to "Bridge the gap" between all three interaction methods.

I have to say this has led to some "vigorous" debates on the various suggestions to build this bridge.  Currently we have a few gestures and we think we can do almost everything a windows user would want to do.

However, I see scope for improvement.  I would like to hear you ideas on how a Windows user would like to interact, how a Mac user would like to interact and even how a Linux user would like to interact."

Ciritx's Chris Fleck adds: "We are actively developing a Citrix Receiver for the iPhone that will bring the world of millions of Windows apps and developers to the iPhone. As part of our testing and demonstrations we are looking for examples of compelling applications that will not run natively on the iPhone, however if the app was hosted on XenApp and delivered to the iPhone it would provide a great visual example of the power of Citrix and the iPhone."