Advanced Installer is a powerful and easy to use setup authoring tool which offers full Windows Installer support and more. You can configure every aspect of your installer through a simple graphical user interface or through its command line.
InstallAware provides Windows Installer (MSI) authoring, MSI compression, and MSI repackaging solutions. Tools include: InstallAware for Windows Installer, Setup Squeezer for Windows Installer, and Setup Squeezer for InstallShield.
Orca.exe is a database table editor for creating and editing Windows Installer packages (.msi) and merge modules. The tool provides a graphical interface for validation, highlighting the particular entries where validation errors or warnings occur.