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WiX Toolset vs Qt Installer Framework: catalog facts
WiX Toolset	Qt Installer Framework
Free Free and open source; FireGiant sells extended support for older versions.	Free Free under the GPL-3.0 with a Qt exception; commercial Qt users also get it.
Windows, Command line	Windows, macOS, Linux, Command line
Installer definitions are plain XML that fit in source control Integrates with build systems and Visual Studio through HeatWave	One configuration builds installers for Windows, macOS and Linux Supports online installers and later updates
Steep learning curve compared with wizard-based installer builders Versions 3, 4 and 5 are out of community support	Download requires a Qt Account Configuration and scripting take time to learn
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0-only WITH Qt-GPL-exception-1.0
No account needed	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.