*Support for all 32-bit Windows versions in use today -- Windows 95, 98, 2000, NT 4.0, and NT 3.51 (optional). An older 16-bit version of Inno Setup is still available separately which supports Windows 3.1, 95/98/2000, and all versions of NT.
*Full source code: The same set of code can be compiled under Borland Delphi 2.0-5.0.
*Supports creation of a single EXE to install your program for easy online distribution. Disk spanning is also supported.
*Standard wizard interface.
*Complete uninstall capabilities.
*Copying of files:
Includes integrated "deflate" file compression (the same compression .zip files use). The installer has the ability to compare file version info, and replace in-use files. On 32-bit installations, shared file counting is also supported, along with DLL/OCX and type library registration.
*Creation of Start Menu/Program Manager groups and icons.
*Creation of .INI entries.
*Creation of registry entries.
Proven track record. Inno Setup has been around for over 3 years, and currently has many thousands of users