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Inno Setup vs Qt Installer Framework: catalog facts
Inno Setup	Qt Installer Framework
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free under the GPL-3.0 with a Qt exception; commercial Qt users also get it.
Windows	Windows, macOS, Linux, Command line
A single script file describes the whole installer, and the permissive licence allows commercial use, modification and…	One configuration builds installers for Windows, macOS and Linux Supports online installers and later updates
It builds Windows installers only, and anything beyond the basics means learning its Pascal scripting.	Download requires a Qt Account Configuration and scripting take time to learn
Downloadable app	Downloadable app
Open source	Open source
License: Inno Setup License	License: GPL-3.0-only WITH Qt-GPL-exception-1.0
Not stated if an account is needed	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 2, 2026

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