MAKEMSI is a freeware tool which enables you to easily and reliably create low overhead "MSI" or "Windows Installer" based installers. Windows Installer is a Microsoft developed and backed installer format or technology for building reliable installation packages.
MAKEMSI utilizes simple XML like text files for the reliable creation (or updating) of MSI based installers. Once set up subsequent rebuilds are automated, reliable, quick and in general require no MSI skills. Not only does MAKEMSI build the MSI but it creates HTML documentation for it as well! As an MSI creator MAKEMSI generates small files, unlike those built by other tools which can be huge!