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. * Support for all versions of Windows in use today: Vista, XP, 2003, 2000, Me, 98, 95, and NT 4.0. (No service packs are required.) * Extensive support for installation of 64-bit applications on the 64-bit editions of Windows Vista, Windows XP, and Windows Server 2003. Both the x64 and Itanium architectures are supported. (On the Itanium architecture, Service Pack 1 is required to install in 64-bit mode.) * 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/OCXs 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. * Support for passworded and encrypted installs. * Silent install and uninstall. * Full source code is available (Borland Delphi 2.0-5.0).