MojoSetup is described as 'Putting together a MojoSetup installer involves five general steps:' and is an app in the OS & Utilities category. There are five alternatives to MojoSetup for a variety of platforms, including Windows, Linux, Mac, BSD and PortableApps.com. The best alternative is Inno Setup, which is both free and Open Source. Other great apps like MojoSetup are NSIS (Free, Open Source), Makeself (Free, Open Source), InstallBuilder (Paid) and Nixstaller (Free, Open Source).
NSIS (Nullsoft Scriptable Install System) is a professional open source system to create Windows installers. It is designed to be as small and flexible as possible and is therefore very suitable for internet distribution.
makeself.sh is a small shell script that generates a self-extractable tar.gz archive from a directory. The resulting file appears as a shell script (many of those have a .run suffix), and can be launched as is.
Nixstaller is an Open Source project with the goal to create user friendly and flexible installers that work on various UNIX like systems. Some of Nixstaller's features: Installers will be able to run on many common UNIX systems.