PlantUML

lastmod 2025-12-11created 2020-03-185 edits

PlantUML is an open-source project for drawing diagrams quickly.

Disgrams

• Sequence diagram
• Usecase diagram
• Class diagram
• Activity diagram (here is the legacy syntax)
• Component diagram
• State diagram
• Object diagram
• Deployment diagram
• Timing diagram

The following non-UML diagrams are also supported:

• Network
• Wireframe graphical interface
• Archimate diagram
• Specification and Description Language (SDL)
• Ditaa diagram
• Gantt diagram
• MindMap diagram
• Work Breakdown Structure diagram
• Mathematic with AsciiMath or JLaTeXMath notation
• Entity Relationship diagram (ERD)

Entity Relationship Diagram

Example:

@startuml

' hide the spot
hide circle

' avoid problems with angled crows feet
skinparam linetype ortho

entity "Entity01" as e01 {
  *e1_id : number <<generated>>
  --
  *name : text
  description : text
}

entity "Entity02" as e02 {
  *e2_id : number <<generated>>
  --
  *e1_id : number <<FK>>
  other_details : text
}

entity "Entity03" as e03 {
  *e3_id : number <<generated>>
  --
  e1_id : number <<FK>>
  other_details : text
}

e01 ||..o{ e02
e01 |o..o{ e03

@enduml

List of UML Software

See also

• UML
• OpenFLOW - A tool for quickly creating beautiful infrastructure diagrams locally
• Mermaid

Favorite site

• PlantUML web site
• [Recommended] Text to diagram (tool comparison: D2 vs MermaidJS vs Graphviz vs PlantUML)