Best UML Diagram Tools in June 2022

UML diagram tools are a type of software used for designing, building and maintaining software systems. UML diagrams visually represent an object-oriented design, which helps communicate how systems are structured.

updated May 18, 2022 11:45 AM

20

listed services

2,172

analyzed reviews

217

suspicious reviews removed

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Service

Price

Drag-and-Drop Interface

UML Diagram Types

UML Templates

Team Collaboration

Export Formats

1

Lucidchart logo

Lucidchart

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4.7/5

981 reviews

$7.95

per month, $95.40 billed annually

Structural UML,Activity UML

Unlimited

Real-time

JPEG,PNG,PDF

2

Creately logo

Creately

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4.2/5

145 reviews

$8

per month, $57.60 billed annually

Structural UML,Activity UML

Unlimited

Non Real-time

PNG,PDF

3

Visual Paradigm logo

Visual Paradigm

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3.8/5

573 reviews

$4.00

per month, $48.00 billed annually

Structural UML,Behavior UML,Activity UML

Limited

Non Real-time

PNG

4

2

Moqups logo

Moqups

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3.8/5

78 reviews

$13.00

per month, $156.00 billed annually

Structural UML,Behavior UML,Activity UML

Unlimited

Real-time

PNG,PDF

5

1

Software Ideas Modeler logo

Software Ideas Modeler

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3.7/5

6 reviews

$69.00

per license

Structural UML,Behavior UML

Limited

Real-time

JPEG,PNG,PDF

6

1

SequenceDiagram logo

SequenceDiagram

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3.7/5

4 reviews

Free

Activity UML

Limited

Non Real-time

PNG,PDF

7

Astah logo

Astah

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3.7/5

16 reviews

$5.99

per month, $71.88 billed annually

Structural UML,Activity UML

Limited

Real-time

JPEG,PNG,EMF,SVG

8

SmartDraw logo

SmartDraw

Truely score heart icon

3.6/5

80 reviews

$5.95

per month, $71.40 billed annually

Structural UML,Activity UML

Unlimited

Non Real-time

PDF

9

EdrawMax logo

EdrawMax

Truely score heart icon

3.6/5

58 reviews

$245.00

One-time payment

Structural UML,Behavior UML

Unlimited

Non Real-time

JPEG,PNG,PDF

10

Cacoo logo

Cacoo

Truely score heart icon

3.6/5

140 reviews

$5.00

per month, $60.00 billed annually

Structural UML,Activity UML

Unlimited

Real-time

JPEG,PNG,PDF

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Frequently Asked Questions

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What is a UML Diagram Tool?

UML diagram tools provide a medium where users can develop and visualize their class models by automatically generating common diagrams in the UML.

Why do you need a UML Diagram Tool?

This tool is primarily meant for the conceptual and architectural design phase of a project. It is one method to express and visualize what a system looks like, helping your audience understand the structure and evolution of what you’re working on so that all collaborators can be on the same page.

What are the core features of the UML Diagram Tool?
Drag-and-Drop Interface

The drag-and-drop interface feature in a UML diagram tool makes files accessible from the context menu of a design element. You can drag an object from another schema and drop it into the diagram pane or into the drawing area.


Multiple UML Diagram Types

Multiple UML diagram types contain elements for showing a component hierarchy, as well as dependencies between those components. It can illustrate the dynamic relationship between different classes, which are ranked by considerations like sequence, dependency and precedence.


UML Templates

UML templates allow users to generate multiple diagrams with one basic outline. This is a more efficient way to create layouts and diagram representations by sharing common content, than reinventing the wheel every time. This supports programmers and engineers needing to create new classes, objects and conceptual frameworks for programs and systems.

What are the types of UML Diagram Tools?
Sequence UML Diagram Tool

A UML sequence diagram tool produces diagrams illustrating the sequence in which tasks will be completed, their deadlines and their locations. It includes diagram creators, diagram editors and technical documentation generators. It also clearly presents all sequential task dependencies.

Class UML Diagram Tool

Class UML diagram tools design object-oriented systems. They are ideal for designing diagrams of classes and class relationships, displaying class objects and attributes, or outlining interfaces between information systems and their environment. Class diagrams depict abstractions like classes, interfaces, traits, enumerations and objects.

Use Case UML Diagram Tool

Use case diagram tools typically are used in the software design process to specify what the software does. Usually it’s one of the first diagrams created in the process and is sometimes called a scope diagram. A use-case diagram visualizes functional requirements which arise while using a system, application or device.

Who needs UML Diagram Tools?
Software Developer

Software developers can use these to show their work to their team before it actually works. UML diagrams visually depict how a software functions, which mitigates miscommunication by showing the steps, structure and data flow as clearly as possible to your software to others who aren’t as involved as they are.


Project Manager

Project managers appreciate this tool because it visualizes dependencies between different project components.

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