IzPack is described as 'one-stop solution for packaging, distributing and deploying applications' and is a Software Installer in the OS & Utilities category. There are more than 25 alternatives to IzPack for a variety of platforms, including Windows, Linux, Mac, Wine and PortableApps.com. The best alternative is Inno Setup, which is both free and Open Source. Other great apps like IzPack are NSIS (Free, Open Source), WiX (Free, Open Source), Advanced Installer (Freemium) and install4j (Paid).
Visual Installer is a powerful but easy-to-use setup tool. You can create a distributable setup package and a visual setup wizard in minutes, without any programming. A created setup package can be deployed via a CD, DVD, USB stick or the Internet.