We covered DragonFireSDK back in January, when they were a jailbreak-only program. They've since grown up a bit, and no longer require a jailbroken iPhone - which is good for all you folks stillllllll waiting for your jailbreak - to get developing in Windows.
We get emails almost daily asking us how to develop for the iPhone in Windows (uh... why are you emailing us that... post in the forums. ), so I figured revisiting these guys would be solid. DragonFireSDK is a Windows iPhone SDK in C and C++ which comes with an iPhone Simulator. It allows you to do all your code on your Windows computer in C and C++, but be able to test in an actual simulator on Windows, as well as submit apps to Apple. If your device is not jailbroken DragonFireSDK will register it with Apple and allow you to test your app on your native device.
The SDK has a nice suite of editing tools, and the iPhone simulator is solid and a great tool for Windows devs. Especially since Apple has decided if you want to develop for iPhone, you're going to do it on a Mac.
The pricing gets a little hairy though, with a $49.95 starter kit (decent price - includes everything except the ability to build for actual device/release - sim only) and a $99.95 version which allows you to build for device. The issue with the $99.95 version being you get 10 test builds (extras costing $1 each) and only ONE AppStore build (extras costing $10 each). You can either get an actual iPhone Developer account through Apple and submit under that name, or submit for free through the DragonFireSDK folks' parent company - Zimusoft.
The method of getting your code from your computer to Apple is also a bit jury rigged. They mention:
The App that is submitted to the App Store is created on a Mac with your Apple approved C/C++ and the DragonFireSDK functions which call Objective - C functions.
There's a decent amount of apps already created using the DragonFireSDK, including ones like Sliders (link opens iTunes) - which actually looks like a decent time-waster.
We reached out to the guys at DragonFireSDK and they're hooking us up with a couple free serials for their Ultimate Pack, so we'll pass those on to you. If you program and are on Windows, note it in the comments and we'll choose a couple folks sometime this weekend to get free versions of the SDK to.