Industrial Strength Windows Installer XML ( IsWiX ) makes authoring Windows Installer XML (WiX) Windows Installers (.MSI) a breeze. It includes Visual Studio project templates and graphical designers to aid you in authoring 95% of your source code. From there you can author additional code using standard WiX programming techniques.

Starting with v6, IsWiX is only distributed via the Visual Studio Marketplace as a Visual Studio 2022/2026 Extension. You can find it here.