Inno Setup 6.3.3 – Installer for Windows apps

Inno Setup is a free installer for Windows programs. First introduced in 1997, Inno Setup today rivals and even surpasses many commercial installers in feature set and stability.

Features include a wizard interface and the creation of a single EXE for easy online distribution. It supports disk spanning, full uninstall capabilities, customizable setup types, and integrated file compression. Also includes support for installing shared files and OCXs, and the creation of Start Menu icons, INI entries, and registry entries.

This program places no arbitrary limits on how many files, shortcuts, registry entries, etc. that you may include in an installation. However, keep in mind that Inno Setup does need memory for each entry in a script. For example, roughly 120 bytes of memory is needed for each [Files] entry.

Inno Setup Key features:

• Extensive support for the installation of 64-bit applications on the 64-bit editions of Windows. The x64, ARM64, and Itanium architectures are all supported.
• Extensive support for each administrative and non-administrative installation.
• Supports the creation of a single EXE to install your program for simple online distribution. Also supports Disk spanning.
• Standard Windows wizard interface.
• Customizable setup types, e.g. Full, Minimal, and Custom.
• Complete uninstalling capabilities.
• Installation of files: Includes built-in support for “deflate”, bzip2, and 7-Zip LZMA/LZMA2 file compression. The installer can check file version information, replace in-use files, use shared file counting, register DLL/OCXs and type libraries, and install fonts.
• Creation of shortcuts wherever, together with within the Start Menu and on the desktop.
• Creation of registry and .INI entries.
• Support for multilingual installs, together with right-to-left language support.
• Running different programs earlier than, throughout, or after installation.
• Support for passworded and encrypted installs.
• Support for digitally signed installs and uninstalls, together with dual signing (SHA1 & SHA256).
• Silent installs and uninstalls.
• Unicode installs.
• We have integrated the preprocessor option for advanced compile-time customization.
• Integrated Pascal scripting engine option for advanced run-time install and uninstall customization.
• The complete source code is available from GitHub.
• Tiny footprint: only about 1.3 MB overhead with all features included.
• All features are documented.
• Used by Microsoft Visual Studio Code and Embarcardero Delphi.

The Inno Setup QuickStart Pack includes Inno Setup itself and additionally includes options to install third-party add-ons such as the ISTool script editor and Inno Setup Preprocessor. These add-ons are not official and are not required for general usage, but make Inno Setup easier to use.