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WiX Toolset vs Inno Script Studio: catalog facts
WiX Toolset	Inno Script Studio
Free Free and open source; FireGiant sells extended support for older versions.	Free Free of charge, with optional donations.
Windows, Command line	Windows
Installer definitions are plain XML that fit in source control Integrates with build systems and Visual Studio through HeatWave	Builds Inno Setup scripts through a graphical interface Compiles installers from within the same tool
Steep learning curve compared with wizard-based installer builders Versions 3, 4 and 5 are out of community support	Windows only Requires Inno Setup and only produces Inno Setup installers
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.