Apple's iTunes software will only install and run if additional Apple products are installed on the computer system as well. This includes Apple Quicktime and Bonjour. A user installing iTunes will notice that the installer will also install Quicktime and Bonjour on the host system with no obvious option to opt out of their installation.
There is however a way to install iTunes without Apple Quicktime, Bonjour, MobileMe support and iTuneshelper process running at startup. This can be achieved with a custom installer that can be downloaded from the Custom Installers page which contains installers for the English and multi-language versions of iTunes 22.214.171.124 and 126.96.36.199. The only requirement other than running the installer to install iTunes is an installation of Quicktime Alternative and the Quicktime Alternative iTunes add-on which makes the program compatible with iTunes 8.
The correct sequence for installing iTunes without Quicktime and Bonjour would be therefore to install Quicktime Alternative, then the Quicktime Alternative plugin and finally iTunes using the custom installer. The custom installer will skip the installation of aforementioned programs and services. This is great news for users who do not want to have those programs running in the background or those who prefer to run the Quicktime Alternative program instead of the original.
The iTunes customer installer is only available for the Microsoft Windows operating system. It comes as a msi file that allows a silent installation with the switches /qb /norestart.
Update: The last update that has been posted on the original download site dates back to 2009. We have therefore removed the download links. Instead of leaving you standing in the rain though, we have an alternative for you. Just head over to this custom installers site and download the 32-bit or 64-bit version of iTunes from it. The installers get regularly updated so that you can be sure that you will always run the latest version of iTunes on your system.