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...
OpenCms ANT Build allows to build OpenCms modules from a build tree (e.g. in your IDE) which then may be installed on your OpenCms server. It contains 2 ANT task for scripting custom build processes. A sample tree with build.xml is included.
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 its features are: small size overhead, large compatibility, Lua scripting and few dependencies.