Download and Installation

JetUML is available under the terms of the GNU General Public License v3. The application is distributed as a Java archive (jar) file, or as native binary application on some operating systems. Download the application from the latest release page. Please consider supporting the project by starring the GitHub repo and by writing an endorsement.

Privacy Policy

JetUML does not collect any information. The application only accesses the network to open web pages via the commands in the Help menu.

Installation Instructions

JetUML is distributed in two formats:

• Self-contained application: A large OS-specific download that must be installed on your system, but that does not require the Java platform. Currently available for Windows only, with plans to offer binaries for Windows and Linux when resources permit it.
• Thin Jar: A small Java archive (jar) file that does not include any of the dependencies. This option is available for users who just want to download a tiny file and run it from the command-line. The thin jar is OS-independent but requires to have Java 17 or later and JavaFX 17 or later installed.

Self-Contained Application

• Download the file JetUML-<Version>-<OS>.<ext> that corresponds to your operating system from the latest release page.

• Run or install the file as customary on the appropriate operating system. You will be asked where to extract the application and a shortcut will be added to the desktop.

• If you are upgrading from a previous version, you can install the new application on top of the older version.

Thin Jar

This format requires that you have both Java and JavaFX version 21 or above installed on your system.

Download file JetUML-<Version>.jar from the latest release page, to a local directory.

To run JetUML, open a command-line terminal window and enter the command below from the same directory where you downloaded the file, or write a script to execute it more conveniently (use java instead of javaw on OSX/Linux).

javaw --module-path "PATH_TO_JAVAFX_LIB" --add-modules=javafx.controls,javafx.swing,java.desktop,java.prefs -jar JETUML_FILE

Where PATH_TO_JAVAFX_LIB is the full path to the lib directory of the javafx installation and JETUML_FILE is the path to the JetUML jar downloaded. For example:

javaw --module-path "C:\local\Java\javafx-sdk-21.0.2\lib" --add-modules=javafx.controls,javafx.swing,java.desktop,java.prefs -jar JetUML-3.9.jar