Download StarUML – Professional UML Modeling Tool for Developers

StarUML is a fast, flexible, and extensible UML modeling tool designed for software architects and developers who need to create professional diagrams and documentation. It supports a wide range of UML 2.x diagram types and provides a modern, intuitive interface that makes complex modeling workflows approachable.

Beyond UML, StarUML supports SysML, ERD, BPMN, and other notation standards, making it a versatile choice for system design, database modeling, and business process documentation. It also supports model-driven code generation and reverse engineering, bridging the gap between visual design and actual code.

StarUML runs on Windows, macOS, and Linux, and features a plugin-based extension system that allows teams to customize it for their specific workflows. Its export capabilities cover SVG, PDF, PNG, and HTML documentation generation, making it suitable for both individual developers and enterprise teams.

Key Features

• UML 2.x diagram support – Class, sequence, use case, activity, state, component, deployment diagrams, and more.
• Multiple notation standards – Supports SysML, ERD, BPMN, and flowchart notation in addition to UML.
• Code generation and reverse engineering – Generate Java, C++, Python, or C# code from models and import existing code as diagrams.
• Cross-platform – Available on Windows, macOS, and Linux with a consistent interface across all platforms.
• Plugin ecosystem – Extend functionality with community and official plugins for additional languages, formats, and workflows.
• Export options – Export diagrams as SVG, PDF, PNG, or generate complete HTML documentation packages.

How to Install

1. Download the StarUML installer for your operating system from the link below.
2. Run the installer and follow the on-screen setup wizard to complete installation.
3. Launch StarUML and create a new project from the File menu.
4. Choose a diagram type from the Diagram menu to start building your models.
5. Install additional plugins via Extensions > Extension Manager if needed for your workflow.