Inno Setup is a powerful and flexible tool for creating professional software installers for Windows applications. Inno Setup has been a trusted choice for developers since its initial release in 1997. The tool is highly praised for its simplicity and effectiveness, enabling developers to build comprehensive installation packages with minimal effort.

One of Inno Setup's standout features is its support for all versions of Windows, including the latest editions. It offers extensive customization options, allowing developers to tailor the installation process to meet their specific needs. The scripting engine is robust, providing the ability to handle complex installation tasks and conditional operations.

Inno Setup also supports multilingual installations, ensuring that software can reach a global audience. The tool includes features such as integrated file compression, password protection, and support for digital signatures, enhancing the security and integrity of the installation packages.

Inno Setup is open-source, offering developers the flexibility to modify and extend the software to suit their unique requirements. The active community and comprehensive documentation make it easy to get started and find solutions to common challenges. With its blend of ease-of-use, power, and versatility, Inno Setup remains a top choice for developers looking to create reliable and user-friendly installers.

Key Features:

• Multiple Installation Types: Create full or minimal installations based on user choices.
• Custom Scripts: Use Pascal scripting for tailored installation processes.
• Multilingual Support: Easily create installers in different languages.
• Disk Spanning: Split installers across multiple disks for large applications.
• File Compression: Reduce installer size with built-in compression options.
• Automatic Uninstaller: Generates an uninstaller for easy software removal.
• Digital Signing: Supports signing installers for enhanced security.
• Good Documentation: Well-documented with strong community support for help and resources.

• To further help protect installers against potential DLL preloading attacks, Setup/Uninstall now calls SetDefaultDllDirectories if available to remove the application directory from the DLL search order. If SetDefaultDllDirectories is not available or cannot be called, it now additionally preloads a set of system DLLs known to be loaded unsafely by older or unpatched versions of Windows.
• Change in default behavior: the OutputBaseFileName [Setup] section directive now defaults to mysetup instead of setup. Setting it back to setup is not recommended: all executables named "setup.exe" are shimmed by Windows application compatibility to load additional DLLs, such as version.dll. These DLLs are loaded unsafely by Windows and can be hijacked. If you do so anyway, the compiler will issue a warning.
• Added new [Files] section flags: sign and signonce. Instructs the compiler to digitally sign the original source files before storing them. Ignored if [Setup] section directive SignTool is not set. Inno Setup's own compiler files are now also signed.
• [Setup] section directive LZMADictionarySize now allows the LZMA dictionary size to be increased up to 1 GB from the previous maximum of 256 MB. Review the memory requirements listed in the Compression topic before using!
• Improved the "auto-retry" feature of the [Files] section: it now also retries if MoveFile failed even if the preceding DeleteFile succeeded. Additionally, if MoveFile keeps failing it will now register the file to be replaced on restart if the restartreplace [Files] section flag is used instead of displaying an error message.
• The value of the AppVersion directive is now not only used to set the MajorVersion and MinorVersion values in the Uninstall registry key when possible but also used to set the VersionMajor and VersionMinor values as required by newer versions of the Windows App Certification Kit.
• Inno Setup Preprocessor (ISPP) changes:
  • Added new function RemoveFileExt.
  • Documented predefined variable ISPPCC_INVOKED.
  • Console-mode compiler (ISCC) change: Added new command line parameter /J. Can be used to #include additional files.
• Unicode Inno Setup: Added official Armenian translation.
• Minor tweaks.