jrsoftware/issrc
Issrc
Inno Setup is an open-source script-driven installer generator for Windows. It transforms a plain-text script—written in a Pascal-derived scripting language—into a standalone executable that handles file installation, registry configuration, shortcut creation, and uninstall logic. The resulting installer is a self-extracting executable that compresses all payload files using LZMA compression, producing a compact and self-contained setup package.
The tool distinguishes itself with a fully programmable Pascal-based scripting language, allowing developers to write custom logic, design custom wizard pages and dialogs, and control every step of the installation process. It automatically generates an uninstaller and offers a wizard-driven user interface with progress indicators and customizable message boxes. The installer engine builds both 32-bit and 64-bit installations from a single script, supports silent and unattended command-line deployment, and produces an installer that runs immediately upon launch.
Beyond the core script compilation, the system provides capabilities for adding custom user interface elements, managing multi-architecture packaging, and generating installers that work across different Windows environments. The project is distributed as free and open-source software, with its documentation and script syntax covered in the official manual available from the repository.
Features
- Open Source Software - A free and scriptable installation system for packaging and deploying Windows software without commercial licensing.
- Data Compression Algorithms - Compresses all installation payload files using the LZMA algorithm to minimize final installer size.
- Installation Scripts - Transforms a plain-text script describing files and settings into a standalone installer executable.
- Script-to-Executable Compilers - Compiles Pascal-like setup scripts into standalone executable installers that handle file installation and system configuration.
- Silent Installers - Supports running the installer from the command line without user interaction for automated software rollouts.
- Windows Installation Utilities - Creates standalone executables that install Windows applications, copying files and configuring the target system.
- Script Compilers - Transforms a human-readable script file into a standalone executable installer for Windows applications.
- Multi-Architecture Installers - Builds a single installer that handles both 32-bit and 64-bit Windows environments from one script.
- Self-Extracting Installer Bundles - Produces a single EXE file containing both compressed payload and installer logic that self-extracts on launch.
- Pascal-Derived - Provides a full Pascal-based scripting language for writing custom installer logic and wizard pages.
- Auto-Generated Uninstallers - Automatically generates an uninstaller executable that can remove all installed files and registry entries.
- Installation Wizards - Renders a multi-step installation wizard with customizable pages, message boxes, and progress indicators.
- Customizable Wizard Pages - Allows adding custom wizard pages, dialogs, and user input fields to tailor the installation experience.
