Inno Setup

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

• Features
  Learn more about what Inno Setup can do.
• Download Inno Setup
  Get the latest version of Inno Setup here.
• Mailing List
  Be notified by e-mail whenever major new versions are released.
• Frequently Asked Questions
  Get answers to common questions and problems.
• Third-Party Files
  Here you can find various useful tools for Inno Setup (for example, GUI script editors) and translations of the Setup text in many languages.
• Donate
  Support the Inno Setup project.

Don't forget to check out the Inno Setup forum, the primary source for Inno Setup support. Additionally, a large number of questions and answers can be found on Stack Overflow.

Want to be notified by e-mail of updates? Then click here to subscribe to the Inno Setup announcements mailing list.

Key features:

• Support for every Windows release since 2006, including: Windows 11, Windows 10, Windows 11 on Arm, Windows 10 on Arm, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 8, Windows Server 2012, Windows 7, and Windows Server 2008 R2. (No service packs are required.)
• Extensive support for installation of 64-bit applications on the 64-bit editions of Windows. The x64 and Arm64 architectures are both supported.
• Extensive support for both administrative and non administrative installations.
• Supports creation of a single EXE to install your program for easy online distribution. Disk spanning is also supported.
• Standard Windows wizard interface.
• Customizable setup types, e.g. Full, Minimal, Custom.
• Complete uninstall capabilities.
• Installation of files:
  Includes integrated support for "deflate", bzip2, and 7-Zip LZMA/LZMA2 file compression. The installer has the ability to compare file version info, replace in-use files, use shared file counting, register DLL/OCX's and type libraries, and install fonts.
• Creation of shortcuts anywhere, including in the Start Menu and on the desktop.
• Creation of registry and .INI entries.
• Running other programs before, during or after install.
• Support for multilingual installs, including right-to-left language support.
• Support for passworded and encrypted installs.
• Support for digitally signed installs and uninstalls.
• Silent install and uninstall.
• Unicode installs.
• Integrated preprocessor option for advanced compile-time customization.
• Integrated Pascal scripting engine option for advanced run-time install and uninstall customization.
• Full source code is available from GitHub.
• Tiny footprint: only 1.75 mB overhead with all features included.
• All features are fully documented.
• Used by Microsoft Visual Studio Code and Embarcardero Delphi.

Is it really free of charge, even for commercial use?

Yes, it may be used completely free of charge, even when deploying commercial applications. However if you wish to show your appreciation and support its development you can make a donation.

(Note: "Completely free of charge" must not be confused with "completely free". Inno Setup is copyrighted software, not public domain software. There are some restrictions on distribution and use; see the LICENSE.TXT file for details.)