Visual Paradigm Community Edition - A Free UML Tool

A full-featured, free UML software for visual modeling with UML 2.x diagrams

Draw Class Diagram for API design. With no redundant widgets on the screen, you can design freely in a large diagram editor.
UML software with ERD tool for database design. Boost efficiency with features like auto column, inline column editing, auto FK creation, etc.
Model system behaviors with UML sequence diagram tool. With the use of the Resource Catalog diagram tool, a sequence diagram can be created quickly and effortlessly.
Visual Paradigm provides both UML tool and SysML tool - Draw SysML Requirement Diagram and other SysML diagram types like IBB, BDD and Parametric Diagram.
Model high level business stakeholders and business goals using the UML use case diagram tool. Use the UML diagram tool to draw sub-sequence diagram and sub-activity diagram.

Everything you need, in one place

UML Support

Draw ANY of the UML2 diagrams

Modeling Capability

Re-usable elements, syntax checking, sub-diagrams, etc

Efficiency

We care about the difference between a click and a drag.

Cross Platforms

Modeling in ANY Java-enabled platforms - Windows, Mac OS X, Linux

Resource Catalog

Draw UML diagrams in quick

Just a mouse drag to draw new shape, and a few more drags for a complete design. Resource Catalog is simply the synonym of efficiency and quality. Visual Paradigm is a UML software designed with efficiency and quality in mind.

Real Modeling Tools

We build modeling software, not drawing tool

Reuse elements in different models, ensure correctness of design with syntax checking, establish multiple level of abstraction with sub-diagrams, add reference to design artifacts, etc. Visual Paradigm is a UML tool designed for great outcome.

If you have ever used a real modeling software, you will appreciate how much it can help with your modeling work.

Element Referencing

Linkage established

Visual Paradigm is a full-featured UML software that allows you to establish linkages among UML model elements and with external resources like webpages and physical file.

Feature List

	Community Edition FREE for non-commercial use	Modeler Edition $6 / Month for ANY purposes
Use Case Diagram
Class Diagram
Sequence Diagram
Communication Diagram
State Machine Diagram
Activity Diagram
Component Diagram
Deployment Diagram
Package Diagram
Object Diagram
Composite Structure Diagram
Timing Diagram
Interaction Overview Diagram
Entity Relationship Diagram (ERD)
SysML Requirement Diagram
SysML Block Definition Diagram
SysML Internal Block Diagram
SysML Parametric Diagram
Business Concept Diagram
Printing	*
Image exporting (PNG, JPG)	*
Business Process Modeling (BPMN)
Data Flow Diagram (DFD)
Flowchart maker
Team collaboration (Cloud / On-Premises)
Diagram review and commenting
Task management
Project glossary management
Textual Analysis
EPC diagram
Process Overview
Organization chart
Network diagram
Rack diagram
Venn diagram
Floor plan maker
	FREE Download	FREE Trial

* A single-lined watermark will appear in printout and images produced by the Community Edition

Who's using this great UML software?

Visual Paradigm are trusted by over 230,000 people in companies ranging from small business to Fortune 500 companies, universities and government units.