The interest in creating mobile apps or mobile websites with Drupal is increasing enormously. With the launch of the new Windows Phone today, the new Symbian^3 and the BlackBerry 6 family of devices, the already enormous popular Android and iPhone duo got some new brothers and sisters. It is clear that there will be an enormous need for mobile developers and platforms that can drive these developments.
To illustrate the interest of the Drupal community in Mobile, just have a ook at a recent blogpost by Dries where he polled the community about possible wishes and needs in order to make Drupal a better platform to drive mobile apps.
While a number of solutions are being created as we speak I just wanted to point to two specific efforts that, instead of creating Drupal code to better communicate with mobile apps, write libraries for mobile platforms to better communicate with Drupal:
Drupal iOS SDK is an iPhone library for Objective-C developers
Titanium API Group tries to collect snippets of code for the Titanium Framework that can power both Android and iPhone platforms. Hopefully some more formal Titanium libraries will emerge from this effort...