Top Alternatives to Umbrello

Lucidchart is a leading web-based diagramming software that empowers individuals and teams to create complex visual representations of ideas, systems, and processes. It offers extensive shape libraries, real-time collaboration features, and seamless integration with popular productivity tools, making it ideal for flowcharts, UML diagrams, wireframes, and more.

draw.io is a versatile online diagramming tool providing a rich feature set for creating professional diagrams of all types. It offers robust integrations with major cloud storage providers and office suites, enabling seamless collaboration and accessibility. Its intuitive interface makes diagram creation straightforward for users of all skill levels.

Dia is a free and open-source diagramming software suitable for creating a variety of diagrams including flowcharts, UML diagrams, and network layouts.

yEd Graph Editor is a versatile and free desktop application for creating high-quality diagrams of various types, including flowcharts, UML diagrams, BPMN diagrams, and more. It offers powerful automatic layout algorithms and a wide range of formatting options, making it suitable for both simple and complex visualizations.

Microsoft Visio is a powerful diagramming tool designed to simplify complex information through visual representations like flowcharts, network diagrams, and floor plans. It is a key part of the Microsoft Office suite, offering a wide range of stencils and templates for various industries and needs.

OmniGraffle is a robust diagramming and vector graphics application designed for macOS and iOS. It empowers users to create a wide range of visuals including precise flowcharts, complex network diagrams, organizational charts, and intricate illustrations.

PlantUML is an open-source tool that allows users to generate a wide variety of UML and other diagram types from a simple human-readable text description. It supports sequences, use case, class, activity, component, state, object, deployment, timing diagrams, and more, making it accessible and efficient for technical documentation and visualization.

Edraw Max is a powerful, all-in-one diagramming software for creating professional diagrams, charts, floor plans, network diagrams, and much more. It offers a vast library of templates and symbols for various industries, facilitating efficient visual communication and project planning for individuals and teams.

StarUML is a robust modeling platform supporting a wide range of diagrams including UML, SysML, and BPMN. It offers powerful features for software engineering, data modeling, and business process modeling.

UMLet is an open-source, Java-based UML modeling tool designed for both educational purposes and rapid creation of UML diagrams. It supports a wide range of diagram types and offers good integration with popular IDEs.

Visual Paradigm is a comprehensive modeling and design tool for software development, enterprise architecture, and business process analysis. It supports a wide range of diagramming notations including UML, BPMN, ERD, and more, facilitating code generation, reverse engineering, and team collaboration.

Software Ideas Modeler is a comprehensive CASE and UML tool designed for creating a wide range of diagrams, facilitating software design, analysis, and documentation. It supports numerous modeling languages and features like code generation, team collaboration, and extensive customization via plugins, making it suitable for various development workflows.

Diagram Designer is a free, lightweight vector graphics editor for creating various diagrams, including flowcharts, UML diagrams, illustrations, and slideshows.

VisiTouch, though discontinued, was an iOS application designed for viewing and converting Microsoft Visio diagrams (VSD, VDX, VSDX) on iPhone. It provided a convenient way to access and share your Visio files on the go, integrating features like PDF conversion and collaboration.

Nevron Draw is a comprehensive diagramming software designed to help users create professional-looking diagrams, flowcharts, floor plans, and more. It offers a rich feature set, collaborative capabilities, and extensive export options for various diagramming needs.

ProcessMaker is a leading open-source digital process automation platform designed to streamline workflow and business process management.

Astah Community Edition is a free, powerful modeling tool supporting a wide range of diagram types beyond just UML, designed for individuals and small teams.

Diagrammix is a robust macOS application engineered for the efficient creation of professional-looking diagrams, flowcharts, and various graphical representations. It offers a user-friendly interface combined with powerful tools to quickly visualize complex information.

Modelio is a free and open-source modeling tool that supports various standards, including UML, BPMN, and SysML. It offers a comprehensive environment for designing, documenting, and generating code for software and systems.

WhiteStarUML is a comprehensive, open-source UML modeling tool designed for software developers and system architects. It supports a wide range of UML diagrams and offers features like code generation and reverse engineering.