Is there a cross-platform network library for the iPhone?

Is there a cross-platform network library for the iPhone? Is开发者_运维百科 ACE available for the iPhone? I would like the networking library to be available for iPhoneOS, OS X, Windows (XP, Vista, and Win7 would be nice but at least XP), Android, and Blackberry.

The ACE networking library is available for iPhone.

you can see Qt (http://qt.nokia.com/). New port exists for iphone (http://qt.gitorious.org/+qt-iphone/qt/qt-iphone-clone) and android (http://www.kdedevelopers.org/node/4070)