Inno Setup is a feature-packed installation builder. Features include a wizard interface, creation of a single EXE for easy online distribution, support for disk spanning, full uninstall capabilities, customizable setup types, integrated file compression, support for installing shared files and OCX´s, and creation of Start Menu icons, INI entries, and registry entries.

Key features:

• Support for all 32-bit Windows versions in use today -- Windows 95, 98, 2000, 2003, XP, Me, NT 4.0.
• Supports creation of a single EXE to install your program for easy online distribution. Disk spanning is also supported.
• Standard Windows 2000/XP-style 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 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.
• Integrated Pascal scripting engine.
• Support for multilingual installs.
• Silent install and uninstall.
• Full source code is available (Borland Delphi 2.0-5.0).

What's New in version 5.3.6:

• Windows 7 changes:
  • Added new [Setup] section directive: UninstallDisplaySize. On Windows 7 and newer, Setup uses this directive to set the EstimatedSize value in the Uninstall registry key when possible since the Windows 7 Add/Remove Programs Control Panel (called Program and Features) no longer automatically calculates it. If an UninstallDisplaySize is not set, Setup estimates the size itself by taking the size of all files installed and adding any ExtraDiskSpaceRequired values set. Note: Windows 7 only supports the display of values smaller than 4 GB.
• Pascal Scripting now supports IUnknown based COM. Previously it only supported IDispatch based COM but a growing number of Windows API functions are COM based without implementing the IDispatch interface, and you can now use these as well. See the new CodeAutomation2.iss example script for an example. Note: this is only supported by Unicode Inno Setup at the moment, because of Delphi 2's limitations (Delphi 2 is used to compile Non Unicode Inno Setup):
  • Added StringToGUID, CreateComObject, and OleCheck support functions.
  • Added HResult, TGUID, TCLSID, and TIID support types.
• The compiler no longer allows a single LanguageCodePage directive to be applied to multiple languages at once. If you were using this to force Non Unicode Setup to allow the user to select any language regardless of the system code page, set [Setup] section directive ShowUndisplayableLanguages to yes instead.
• Added new CodePrepareToInstall.iss example script.
• Fix: Unicode Pascal scripting: passing a very long string to Format caused an error.
• Minor tweaks.