NSIS (Nullsoft Scriptable Install System) is a professional open-source tool for the development of Windows installers. It is designed to be as small and flexible as possible and is therefore highly suitable for internet distribution.
The most notable addition in this release, NSIS 2.29, is nsDialogs - a faster and far more capable replacement for InstallOptions. It allows creating controls of any type directly from the script and removes the need to mess with slow INI files. It integrates directly into the script by calling functions for notification, including change notification for edit boxes. This release also includes the usual assortment of bug fixes and improvements.