Shortly after the iPhone was announced questions rose by many about the ability to write 3rd party applications on the OS X platform similar to what is done for the Mac. In a couple of interviews Jobs let us know that OS for the iPhone would not be open to developers to the dismay of many.

Today at the WWDC 2007 Jobs released some information and demonstrations of Apple’s new Leopard OS along with news to developers about the iPhone. Opening up the platform while still maintaining a secure environment has been a challenge for Apple, but they made what Jobs described as a “sweet” compromise. They didn’t open up the OS, but will let developers build applications that run on the Safari web browser engine on the iPhone.

This will allow developers to build web …