Nullsoft Scriptable Install System
Nullsoft Scriptable Install System is a script-driven Installer authoring tool for Microsoft Windows with minimal overhead backed by Nullsoft, the creators of Winamp. NSIS is released under a combination of free software licenses, primarily the zlib license. It has become a widely used alternative to commercial proprietary products like InstallShield, with users including Amazon.com, Dropbox, Ubisoft, FL Studio, BitTorrent, and McAfee.
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