NSIS (Nullsoft Scriptable Install System) screenshot
NSIS (Nullsoft Scriptable Install System)

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 successful 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.


NSIS can create Windows installers that are capable of installing, uninstalling, setting system settings, extracting files, etc. Because NSIS is based on script files, you can create both simple and advanced installers.

Small overhead size: NSIS is created to be small, fast and efficient. a full-featured NSIS installer has an overhead of only 34 KB.

Compatible with all major Windows versions: You can create a single installer that is compatible with Windows 95, Windows 98, Windows ME, Windows NT, Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows Sever 2008, Windows 7, Windows Server 2008R2, Windows 8, Windows Server 2012, Windows 8.1, Windows Server 2012R2, Windows Server 2016 and Windows 10.

Unique compression methods:

You can choose between three different integrated compression methods (ZLib, BZip2, LZMA).

Script based:

NSIS has a powerful scripting language. This script language is designed for installers and has commands that help you to perform many installation tasks.

Multiple languages in one installer:

One installer can support multiple interface languages. More than 40 translations are already included, but you can also create your own language files. RTL (right-to-left) languages such as Arabic and Hebrew are fully supported.

Many features and checks for the target system:

The script language provides commands you can use on the target system, from simple features like folder creation and registry editing to text/binary file modification, modification of environment variables and system reboots.

Custom dialogs and interfaces:

You can create custom wizard pages to get user input or integrate configuration options. NSIS includes a classic and modern wizard interface, but it is even possible to create your own custom interface.

Plug-in system:

NSIS can be extended with plug-ins that can communicate with the installer. They can be written in C, C++, Delphi or another language and can be used to perform installation tasks or extend the installer interface.

Support for web installation, file patching:

The NSIS distribution includes a set of plug-ins that allow you to download files from the internet, make internet connections, patch existing files and more.

Project integration, different releases and automatic builds:

The NSIS compiler features a powerful preprocessor. This allows you to easily integrate multiple projects into a single installer or automatically generate installer builds.

Easy and human readable file formats:

The NSIS script format and the format used for interface dialogs are easy, documented and humanly readable.

Portable Compiler:

The NSIS compiler can be compiled for POSIX platforms like Linux and *BSD. Generated installer will still run on Windows only, but this way they can be generated without Windows or WINE.

And more... 

NSIS (Nullsoft Scriptable Install System) - Changelog:

Major Changes:

Use isolated uninstaller directory for every instance.

Minor Changes:

Added !assert.

Fixed !uninstfinalize bug on large uninstallers.

And more.

Download NSIS (Nullsoft Scriptable Install System):

Size: 1.48 MB


Mirror link: Download