An intuitive UML diagram tool for drawing entire systems online
Visualize, build, and document software systems and processes online with a UML diagram tool. Design and communicate technical plans with a unified language everyone understands.
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Turn sketches into detailed UML diagrams at the exact pace you validate and refine solutions. Visually communicate development plans and mitigate misalignment across your organization — all in one UML diagram maker.
Draw new systems
Craft technical diagrams faster with Miro’s complete UML shape packs. Use the comments feature to get instant feedback, save time when diagramming, and co-create a standardized way to build and document systems processes with your team.
Expand your diagramming capabilities
Miro’s online UML diagram tool makes it easy to research, outline, and deliver your technical plans with intuitive diagramming functions — from industry-recognized UML shape packs to easy object insertion and smart drawing features.
Why Miro is your best UML diagram maker
More than just a UML diagram creator
Miro expands the way you work and gives you infinite possibilities for diagramming, planning, and designing your technical plans.
Miro’s all-in-one diagram maker removes the hassle of switching between diagramming and collaboration tools while helping you check off all the essential steps of your diagramming process.
UML Class Diagram
Quickly understand the multiplicity of your system with Miro’s UML class diagram tool. Help your team visualize dependencies, objects relationships, classes, and attributes — all in one tool.
UML Sequence Diagram
Map out systems and interactions between different actors using Miro’s sequence diagram tool. Picture success cases, troubleshoot issues, and understand events as they happen within a system.
UML Component Diagram
Unlike any other UML diagram, the component diagram helps you imagine the physical components of your system and how they are connected. Use this tool to plan development and visualize how complex systems are wired.
UML Communication Diagram
Draw complex logic chains and build a complete map of your systems with Miro’s UML communication diagram. See the big picture and enable your team to plan new functions and scenarios, all in one tool.
UML State Machine Diagram
Easily document, visualize, and refine your technical designs with Miro’s UML state machine diagram tool. Understand objects' actions at different stages, changes over time, and implement ideas more efficiently.
UML Activity Diagram
Depict workflows and break them into bite-sized activities to better understand your system and programs flow. Miro’s UML activity diagram tool allows you to convey information concisely and clearly to everyone, from developers to business managers.
Create flowcharts at speed and simplify your workflows and daily routines with Miro’s flowchart creator. Check off all the essential steps in your process, from alignment to making information actionable.
Create a wide range of diagrams online using an intuitive Mermaid diagram editor — from flow charts to UML sequence diagrams. Easily import existing diagrams, copy code from other sources, and seamlessly make edits.
Use the PlantUML editor app to easily create and import diagrams with a plain text language. Automate the process of generating complex diagrams without worrying about design and layout.
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