"Bitrock's InstallBuilder and Macrovision's Install Anywhere
Enterprise edition are tools for building third-party software
installers. InstallBuilder uses Qt widgets, while Install Anywhere
requires a Java Virtual Machine, but both are cross-platform,
multi-lingual, proprietary tools that are available in downloadable
demos. Both, too require minimal expertise to use. When run in
wizard mode, Install Anywhere is more basic than InstallBuilder and
suffers in comparison, but, when run in Advanced Designer mode, it
eclipses its rival with a huge set of options.
"Why create a third-party installer for GNU/Linux? After all,
the operating system has its own package systems for software
installation, notably dpkg and RPM..."