URLs listed in this category:
iPhone Operating System Development Center
iPhone OS is the operating system developed by Apple Inc. for the iPhone and iPod touch. It is derived from Mac OS X, and is based on the same Mach kernel and Darwin core as Mac OS X.
http://developer.apple.com/iphone/
Symbian OS: The Open Mobile Operating System
Symbian is a software licensing company that develops and licenses Symbian OS, the global open industry standard operating system for advanced, data-enabled mobile phones. Symbian licenses Symbian OS to the world's leading handset manufacturers.
http://www.symbian.com/
Windows Mobile: Smartphone and PDA Software
Find Microsoft Windows Mobile software for smartphones and PDA mobile phones. Synchronize your device with ActiveSync or Windows Mobile Device Center. Personalize your device with free ringtones, games, maps, and more.
http://www.microsoft.com/windowsmobile/