Nullsoft Scriptable Install System (NSIS), is an open-source, script-driven installation system with minimal overhead being backed by Nullsoft, creators of Winamp. NSIS 1 is in many ways similar to the classic Windows installer, but it is more easily scriptable and supports more compression formats. NSIS 2 has a new streamlined GUI, supports LZMA compression, multiple languages and an easy plug-in system.
NSIS was created because of the need to distribute Winamp. It is based on PiMP (Plug-In Mini Packager), also a Nullsoft creation, and is also known as SuperPiMP. After version 2.0a0, the project was moved to SourceForge where developers outside of Nullsoft started working on it on a regular basis. After almost two years of alphas, betas and release candidates, NSIS 2.0 was released.
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