How to develope iPhone apps without XCode?

I'm interested in developing iPhone apps (already an android developer) but I'm a PC man, meaning I can't use XCode without installing os x which I don't feel like doing. Is there another IDE or SDK I can use on PC to develope iphone apps?

The easiest thing to do is run a Linux virtual machine on your Windows, then install GCC compiler and use any text editor of choice. You could also use GNUSTEP

http://www.gnustep.org/experience/Windows.html

Or for more information Google for Objective-C compiler for Windows.

If you are serious then you would get a mac because thats required for this. Otherwise just try to do workarounds as it won't matter anyways if you aren't serious enough about it.