Nullsoft Installation System is a pretty small, efficient and very capable installation system for all Windows based systems...

The Nullsoft Installation System package includes a basic compiler interface.

Being a user's first experience with your product, a stable and reliable installer is an important component of succesful software. With NSIS you can create such installers that are capable of doing everything that is needed to setup your software.

NSIS is script-based and allows you to create the logic to handle even the most complex installation tasks. Many plug-ins and scripts are already available: you can create web installers, communicate with Windows and other software components, install or update shared components and more.

Here are some key features of "Nullsoft Scriptable Install System":

· SuperPiMP technology
· Generates self contained executable installers
· Support for ZLib, BZip2 and LZMA data compression (files can be compressed individually or together)
· Uninstall support (installer can generate an uninstaller)
· Customizable user interface (dialogs, fonts, backgrounds, icons, text, checkmarks, images etc.)
· Classic and Modern wizard interface
· Fully multilingual, support for multiple languages in one installer. More than 35 translations are available, but you can also create your own
· Page system: You can add standard wizard pages or custom pages
· User selection of installation components, tree for component selection
· Multiple install configurations (usually Minimal, Typical, Full), and custom configuration
· Installer self-verification using a CRC32 checksum
· Small overhead over compressed data size (34 KB with default options)
· Ability to display a license agreement in text or RTF format
· Ability to detect destination directory from the registry
· Easy to use plug-in system (lots of plug-ins for creation of custom dialogs, internet connections, HTTP downloading, file patching, Win32 API calls etc. are included)
· Installers can be as large as 2GB
· Optional silent mode for automated installations
· A preprocessor with support for defined symbols, macro's, conditional compilation, standard predefines
· A lovely coding experience with elements of PHP and assembly (includes user variables, a stack, real flow control, etc.)

· Release Notes
· Support for Microsoft's upcoming release of Windows 7 has been added
· based on RC1 testing and documentation. Please report any related issues
· and don't forget to use RequestExecutionLevel.
Changes:
· Major Changes
· Added support for Windows 7 installers - use RequestExecutionLevel, just
· like with Vista (bug #2725883)
· Added WinVer.nsh Windows 7 and Windows 2008 R2 support
· Installers now identify as Terminal Services aware
· (IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE) so $WINDIR will no
· longer be under the user's profile when installing on Terminal Services
· Less UAC annoyance in Add/Remove control panel (bug #2697027)
· Minor Changes
· Added wildcard and /nonfatal suppport for !delfile (RFE #1505425)
· Fixed !searchparse (bug #2680110)
· Fixed input validation for CreateFont (bug #2801024)
· Fixed NSIS Menu handling of working directory (bug #2781948)
· Fixed Vista issues with shell folders ($DOCUMENTS, $PROFILE, etc.) on
· root directories (bug #2138075)
· Minor docu...