setup

Inno Setup is the industry-standard, open-source scriptable installation system for Windows applications.

Inno Setup has been a cornerstone of Windows deployment since 1997, providing a robust alternative to complex commercial installers. It handles everything from 64-bit application support and administrative privileges to custom Pascal scripting for complex installation logic. The engine produces a single, highly compressed EXE that manages registry entries, INI files, and uninstallation routines with surgical precision. Whether you are deploying a lightweight utility or a multi-gigabyte enterprise suite, Inno Setup delivers a professional, wizard-style interface that ensures your software lands correctly on every version of Windows from 7 to 11.

https://jrsoftware.org/isinfo.php