GImageX is a graphical user interface for the ImageX tool from the Windows Automated Installation Kit v1.1 (WAIK). ImageX is used to capture and apply WIM images for Windows XP and Windows Vista desktop deployments. It uses the Microsoft WIMGAPI API for working with WIM files.
UNetbootin allows for the installation of various Linux/BSD distributions to a partition or USB drive, so it's no different from a standard install, only it doesn't need a CD. It can create a dual-boot install, or replace the existing OS entirely.
InfraRecorder is a free CD/DVD burning solution for Microsoft Windows. It offers a wide range of powerful features; all through an easy to use application interface and Windows Explorer integration.