NULLSoft Scriptable Installer System (NSIS)

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.


  • Low Size Overhead (only 34 KB)
  • Compatible with Windows 95, 98, ME, NT, 2000, XP, Server 2003 Server 2008, Vista, and Windows 7
  • Supports ZLib, BZip2, and LZMA compression
  • Localisation support
  • Creates Self-Contained and Self-Verifying Executable Installers
  • Uninstall support
  • Supports packages up to 2GB
  • Optional silent mode
  • Permissive licencing (mixed CPLv1, bZip2, zLib)
Download NSIS