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.

install4j is a powerful multi-platform Java installer builder that generates native installers and application launchers for Java applications. install4j excels in its ease of use, its extensive platform support and its powerful screen and action system.

IzPack is a one-stop solution for packaging, distributing and deploying applications.

It is fully cross-platform and generates a single installer. As such, it is an alternative to native solutions such as platform-specific installers and package managers. IzPack-generated installers only require a Java virtual machine to run.

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.

hdiutil attach "/Volumes/Recovery HD/com.apple.recovery.boot/BaseSystem.dmg

"The Easiest, Fastest Way to Update or Install Software."

Auto-generates an installer based on freeware you specify on the page.

The missing package manager for OS X