Hi, I'm Paul — 25 years of enterprise Windows development. I built InstallerStudio after WiX went from free/open source to $6,500/year support and InstallShield hit $2,000+/year. Every tool in this space is either unaffordable or requires writing XML by hand.
InstallerStudio is a visual MSI designer built on WinUI 3/.NET 10. No XML, no subscriptions, no external dependencies. Handles files, Windows services, registry, shortcuts, file associations, custom actions, and full installer UI. $159 this month, $199 after. 30-day free trial.
It ships its own installer, built with itself.
Happy to answer questions about MSI internals.