NSIS (Nullsoft Scriptable Install System) is a tool that allows programmers to create installers for Windows. It is released under an open source license and is completely free for any use. NSIS creates installers that are capable of installing, uninstalling, setting system settings, extracting files, etc. Because it's based on script files you can fully control every part of your installer. The scripting language supports variables, functions and string manipulation, just like a normal programming language - but designed for the creation of installers.

The original NSIS documentation can be found at:

Check for news, information, support, examples, tutorials and more.

Quick links:

FAQ - A list of frequently asked questions

Wiki NSIS - Examples, functions, tutorials, plug-ins, software and more

Forum - Post questions or discuss NSIS features