UML Designer icon

UML Designer

UML Designer is an open-source Unified Modeling Language design tool. It allows users to create UML diagrams like use case, class, sequence, activity, and state diagrams. Useful for software developers and architects to visually model software systems.

What is UML Designer?

UML Designer is a free, open-source Unified Modeling Language design and modeling tool. It enables software developers, architects, and analysts to create a visual model of a software system using common UML diagrams.

With UML Designer, users can create diagrams like:

  • Use case diagrams - Model system functionality from a user's perspective
  • Class diagrams - Show structure of code classes and their relationships
  • Sequence diagrams - Visualize workflow and object interactions
  • Activity diagrams - Represent business processes and logic flows
  • State diagrams - Model states of components and events that cause transitions

These UML diagram types allow the visualization of logical and physical elements of a software system before implementation. It helps developers plan, communicate, and write their code more efficiently in a standardized manner.

UML Designer runs on Windows, Linux and OS X. It offers a simple and intuitive drag-and-drop interface to quickly create UML diagrams. Diagrams can be exported as images or code frameworks. Features include syntax coloring, custom styling, free-hand drawing and hyperlinking between diagrams.

With its ease of use and support for the latest UML 2.x specification, UML Designer is a useful tool for software developers, architects and analysts to visually model and design software systems.

The Best UML Designer Alternatives

Top Apps like UML Designer

Enterprise Architect

Enterprise Architect is a comprehensive visual modeling and design solution for designing and constructing software systems, business processes and enterprise architectures. It supports numerous modeling languages including UML, SysML, BPMN, ArchiMate and many more.Key features include:Intuitive graphical interface for diagramming software models, business processes, infrastructure, organizational structures and...

StarUML

StarUML is an open-source software modeling application for creating and editing Unified Modeling Language (UML) diagrams. It is cross-platform, running on Windows, Linux and Mac operating systems.Some key features of StarUML include:Support for all 14 standard UML 2.5 diagram types such as use case diagrams, class diagrams, sequence diagrams, activity...

Visual Paradigm

Visual Paradigm is a professional UML modeling software used by software developers and architects for software design and architecture. It supports all standard UML 2.x diagrams like use case diagrams, class diagrams, sequence diagrams, activity diagrams, communication diagrams, state machine diagrams, deployment diagrams, component diagrams, and more.Key features of...

PlantUML

PlantUML is an open-source tool used for rapidly creating UML diagrams from a plain text language. It supports all standard UML diagrams like use case diagrams, component diagrams, class diagrams, sequence diagrams, state diagrams, activity diagrams, etc. The main goal of PlantUML is to provide a simple and efficient way...

WhiteStarUML

WhiteStarUML is an open-source Unified Modeling Language (UML) modeling tool that runs on Windows, Linux and Mac operating systems. It allows software developers and architects to create various types of UML diagrams like class diagrams, sequence diagrams, use case diagrams, state machine diagrams and activity diagrams.It has basic compliance...

Umbrello

Umbrello is a free, open source Unified Modeling Language (UML) modeling tool and code generator. It enables software developers and architects to create UML diagrams like use case diagrams, class diagrams, sequence diagrams, state machine diagrams and more to visually design and document software systems.Key features of Umbrello include...

Dynamic Draw

Dynamic Draw is a versatile and user-friendly vector graphics editor available for Windows, macOS, and Linux operating systems. As an open-source application, Dynamic Draw benefits from continual development and improvement from its active community of contributors.With an emphasis on usability and efficiency, Dynamic Draw makes it easy to create...

BOUML

BOUML is an open-source modeling tool primarily focused on UML diagrams for software design and architecture. Some key features of BOUML include:Supports all 14 UML 2.x diagram types including use case, class, sequence, state machine, and activity diagrams.Can reverse engineer code into UML class and sequence diagrams for 10+ programming...

Modelio

Modelio is an open-source all-in-one modeling environment supporting a wide range of modeling standards and methods. It includes support for:UML 2 modeling with class diagrams, use case diagrams, sequence diagrams, state machines, activity diagrams, etc.BPMN 2.0 business process modeling notationRequirement modelingData modeling and database design with ER diagramsWireframing and UI...

Papyrus UML

Papyrus UML is an open source tool for modeling software systems with the Unified Modeling Language (UML). Developed as an Eclipse plug-in, Papyrus provides a rich graphical editor for constructing and visualizing various UML diagrams including use case diagrams, class diagrams, state machine diagrams, activity diagrams, communication diagrams, and more...

ClickCharts

ClickCharts is a business intelligence and data visualization software used to create dashboards, charts, and graphs to gain meaningful insights from data. Some key features of ClickCharts include:Drag and drop interface to easily build interactive visualizations like charts, graphs, gauges, maps, and moreLarge library of chart types including bar...