Open Source Installers

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. Being a user's first experience with your product, a stable and reliable installer is an important component of succesful software. With NSIS you can create such installers that are capable of doing everything that is needed to setup your software. NSIS is script-based and allows you to create the logic to handle even the most complex installation tasks. Many plug-ins and scripts are already available: you can create web installers, communicate with Windows and other software components, install or update shared components and more.

BeyondInstall is a powerful multi-platform Java installer builder that generates native installers for Java applications on any OS. The tool features rich functions, robust extensibility,beautiful user interface and easy of use.

Gobisoft is a batch package builder for applications, it builds a self-install package of your programs. Creates a stand alone executable file that performs the (secured installation and removing) of the elements necessary to distribute your applications. The software offers many possibilities, such as executing commands before and after installation.

WinPack if an automated software manage system for Windows to install, remove, upgrade and downgrade softwares.It get information from the update sources. Do some similar work like google pack and Synaptic.