Nullsoft Scriptable Install System 2.43

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

With Nullsoft Installation System you can create such installers that are capable of doing everything that is needed to setup your software.

Nullsoft Installation System 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.

The Nullsoft Installation System package includes a basic compiler interface.

Major Features:

1. Generates self-contained executable installers
2. SuperPiMP technology (so advanced, so amazing, we wont even tell you what it is)
3. Support for ZLib, BZip2 and LZMA data compression (files can be compressed individually or together)
4. Uninstall support (installer can generate an uninstaller)
5. Customizable user interface (dialogs, fonts, backgrounds, icons, text, checkmarks, images etc.)
6. Classic and Modern wizard interface
7. 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.
8. Page system: You can add standard wizard pages or custom pages
9. User selection of installation components, tree for component selection
10. Multiple install configurations (usually Minimal, Typical, Full), and custom configuration
11. Installer self-verification using a CRC32 checksum
12. Small overhead over compressed data size (34 KB with default options)
13. Ability to display a license agreement in text or RTF format
14. Ability to detect destination directory from the registry
15. 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)
16. Installers can be as large as 2GB
17. Optional silent mode for automated installations
18. A preprocessor with support for defined symbols, macros, conditional compilation, standard predefines
19. A lovely coding experience with elements of PHP and assembly (includes user variables, a stack, real flow control, etc.)
20. Completely free for any use.
21. 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/setting/enumerating/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