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Inno Setup vs WiX Toolset: catalog facts
Inno Setup	WiX Toolset
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source; FireGiant sells extended support for older versions.
Windows	Windows, Command line
A single script file describes the whole installer, and the permissive licence allows commercial use, modification and…	Installer definitions are plain XML that fit in source control Integrates with build systems and Visual Studio through HeatWave
It builds Windows installers only, and anything beyond the basics means learning its Pascal scripting.	Steep learning curve compared with wizard-based installer builders Versions 3, 4 and 5 are out of community support
Downloadable app	Downloadable app
Open source	Open source
License: Inno Setup License	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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