There are many iPhone emulators out there. For those that do not know, an emulator is a program that mimics or acts like a device. For instance, there are NES (Nintendo) emulators that allows you to play old NES Roms. The following emulators act as iPhone emulators so you can get an idea of what your website looks like on pretty much any mobile device. Just to note, the emulators are not perfect, so there may be some slight alignment differences. I noticed this when I tested them although it was only a slight difference.