File Size : 1.6 Mb

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. Being a user's first experience with your product, a stable and reliable installer is an important component of successful 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.

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 (including RTL languages) in one installer. More than 40 translations are already 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 ing, 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, macros, conditional compilation, standard predefines

A lovely coding experience with elements of PHP and assembly (includes user variables, a stack, real flow control, etc.)

Installers have their own VMs that let you write code that can support:

File extraction (with configurable overwrite parameters)

File/directory copying, renaming, deletion, searching

Plug-in DLL calling

DLL/ActiveX control registration/unregistration

Executable execution (shell execute and wait options)

Shortcut creation

Registry key reading/settinumerating/deleting

INI file reading/writing

Generic text file reading/writing

Powerful string and integer manipulation

Window finding based on class name or title

User interface manipulation (font/text setting)

Window message sending

User interaction with message boxes or custom pages

Branching, comparisons, etc.

Error checking

Reboot support, including delete or rename on reboot

Installer behavior commands (such as show/hide/wait/etc.)

User functions in script

Callback functions for user actions

Completely free for any use.

And more...



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