I have to admit at being very sceptical about the Microsoft Web Platform Installer, thinking it was just for noobs. Recently, I was nudged down the path of using it (to get the Windows Azure Tools) and I have to say it works very well. Rather than fishing around for various installers, you just pick what you want from the lists (see below) and the Web Platform Installer will go away and install everything for you. There’s no need to mess around downloading MSIs yourself.
The Web Platform Installer offers a comprehensive list of developer frameworks, servers and tools. In addition, it offers various products such as DotNetNuke, WordPress, Umbraco CMS, ScrewTurn Wiki, N2 CMS etc.
The Web Platform Installer has a tiny footprint too.