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PlantUML

Open-source tool for creating UML diagrams from simple textual descriptions, supporting various diagram types and output formats.

Introduction

PlantUML is a powerful open-source tool that enables users to generate UML diagrams and other types of diagrams using a simple, human-readable text-based language. It supports a wide range of UML diagrams, including sequence, use case, class, object, activity, component, deployment, state, and timing diagrams. Additionally, PlantUML extends beyond traditional UML to support network diagrams, UI mockups, Archimate diagrams, Gantt charts, mind maps, and more.

Key Features:

  • Textual Description: Diagrams are defined using a simple and intuitive textual language, making it easy to version control and collaborate on diagrams.
  • Versatile Diagram Support: Supports a broad range of UML and non-UML diagrams, catering to diverse modeling needs.
  • Multiple Output Formats: Exports diagrams in various formats, including PNG, SVG, LaTeX, and EPS, ensuring compatibility with different platforms and tools.
  • Integration Capabilities: Can be integrated with various tools and IDEs, enhancing workflow and productivity.
  • Customization: Offers extensive customization options through themes, styles, and layout engines.

Use Cases:

  • Software Development: Modeling software architecture, designing class structures, and visualizing system behavior.
  • Business Process Modeling: Creating process flows, use case scenarios, and organizational charts.
  • Network Design: Visualizing network infrastructure and dependencies.
  • Documentation: Generating diagrams for technical documentation and reports.
  • Education: Teaching and learning UML concepts and diagramming techniques.

Latest News

News

News

8/5/2026

🧩 New! Render PlantUML diagrams directly inside GitHub with our official browser extension— No server. No tokens. No tracking. Zero permissions but clipboard. — Try it out and let us know what you think! Add to Chrome Add to Firefox # Some RSS flows - Recent activities on the Q&A forum - Recent ...

Recent changes

Recent changes

8/5/2026

🧩 New! Render PlantUML diagrams directly inside GitHub with our official browser extension— No server. No tokens. No tracking. Zero permissions but clipboard. — Try it out and let us know what you think! Add to Chrome Add to Firefox # Recent changes This page lists all modifications and evolutio...

PlantUML Downloads and Source Code

PlantUML Downloads and Source Code

8/5/2026

🧩 New! Render PlantUML diagrams directly inside GitHub with our official browser extension— No server. No tokens. No tracking. Zero permissions but clipboard. — Try it out and let us know what you think! Add to Chrome Add to Firefox # PlantUML Downloads and Source Code ## PlantUML Licensing Opti...

What's New

What's New

8/5/2026

🧩 New! Render PlantUML diagrams directly inside GitHub with our official browser extension— No server. No tokens. No tracking. Zero permissions but clipboard. — Try it out and let us know what you think! Add to Chrome Add to Firefox # Some RSS flows - Recent activities on the Q&A forum - Recent ...

Chart Diagrams

Chart Diagrams

8/5/2026

Chart Diagrams 🧩 New! Render PlantUML diagrams directly inside GitHub with our official browser extension— No server. No tokens. No tracking. Zero permissions but clipboard. — Try it out and let us know what you think! Add to Chrome Add to Firefox # Edit in DokuwikiEdit in AsciidocEdit in Markdo...

Alternatives

  • Mermaid

    It allows creating diagrams and flowcharts from text in a markdown-like syntax, similar to PlantUML's text-based approach.

  • Draw.io (diagrams.net)

    This free online diagramming tool offers a comprehensive graphical interface for creating various diagrams, including UML, with extensive templates.

  • Lucidchart

    A collaborative, cloud-based diagramming platform that provides a powerful drag-and-drop interface for professional UML and other diagram types.

  • Microsoft Visio

    As a professional desktop application, it offers extensive features and templates for creating complex and detailed UML diagrams with a traditional GUI.

  • StarUML

    This open-source desktop application is specifically designed for creating high-quality UML models and diagrams with a focus on software design.

  • Graphviz

    It's an open-source graph visualization software that generates diagrams from simple text descriptions using the DOT language, useful for various graph-based representations.

  • Visual Paradigm

    A robust modeling suite that supports a wide range of diagramming standards, including advanced UML, with features for enterprise architecture and code engineering.

  • yEd Graph Editor

    This free desktop tool automatically arranges complex diagrams and networks, making it suitable for visualizing relationships and structures.

  • UMLet

    A free, open-source UML tool with a lightweight graphical interface, allowing users to quickly draw UML diagrams and export them in various formats.

  • WebSequenceDiagrams

    It provides a straightforward web interface to generate sequence diagrams from simple text input, focusing on a specific type of UML diagram.

FAQ

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