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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.
It allows you to create quick and user friendly installers that are capable of installing, uninstalling, setting system settings, extracting files and more.
Latest NSIS release
NSIS 3.11
Released March 8th, 2025
Development Center
Find and share script code, tutorial, plug-ins and more:
