SQAForums has a number of forums specifically dedicated to different tools and testing techniques. In their Mobile Apps - PDAs & Embedded Systems forum, they've posted a sticky thread that documents the current list of tools that have been compiled by users on those forums. As I understand it, the moderator of that particular forum keeps that list relatively up to date and is adding to it based upon comments by other members. That might be a good resource to go to in order to find a current list of tools.