'''Nullsoft Scriptable Install System''' (NSIS), is an [[open source|open-source]] ([[zlib-libpng license|⁠zlib/libpng license]]), script-driven installation system with minimal overhead being backed by [[Nullsoft]], creators of [[Winamp]]. NSIS 1 is in many ways similar to the classic [[Microsoft Windows|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. The NSIS script compiler compiles on [[POSIX]] platforms.
