Install4j

Install4j is a commercial, cross-platform installer builder for Java applications, developed by ej-technologies. It enables developers to create native installers and launchers for Windows, macOS, and Linux from a single project file. Install4j installers can bundle a Java Runtime Environment or use a system-provided JRE, facilitating distribution of Java applications without requiring users to install Java separately.

Key features include a graphical installer designer with predefined screens for license agreements, directory selection, component selection, and post-install actions. The tool supports multilingual installation experiences, customizable UI elements, and the ability to configure installation prerequisites, environment changes, and registry or system settings. Custom actions can be implemented using Java code to extend installation logic, and conditional flows allow for complex deployment scenarios. Versioning, updates, and the option to generate launchers and native bundles contribute to a streamlined distribution process.

Workflow and usage: Install4j uses a project file that encodes all installation parameters, screens, and actions. The project can be edited in a GUI or imported and modified via a command-line interface, enabling integration into automated build pipelines. A platform-specific installer is produced from the project, allowing consistent deployment across supported operating systems.

Licensing and availability: Install4j is a proprietary product offered by ej-technologies. It is distributed under commercial licenses with trial periods available. The tool is commonly used in development teams seeking a reliable, GUI-driven solution for packaging Java applications as native installers, with integration options for build systems and CI workflows.