Nullsoft Scriptable Install System 2.46 (NSIS 2.46) is software that allows the users to create installations of other software.
In other words it is a professional open source system to create Windows installers.
It is a stable and reliable installer. NSIS 2.46 allows you to create the logic to handle even the most complex installation tasks because of its script based technology.
It generates self-contained executable installers and also generates uninstaller.
It supports ZLib, BZip2 and LZMA data compression. It has user friendly and easy customizable user interface.
It is fully multilingual, support for multiple languages (including RTL languages) in one installer.
It includes a page system that means you can add standard wizard pages or custom pages.
It's installer includes self verification using a CRC32 checksum.
It has ability to display a license agreement in text or RTF format and to detect destination directory from the registry.
It comes with easy to use plug-in system. It also has multiple install configurations and User selection of installation components.
It is very small and flexible therefore very suitable for internet distribution.