PlantUML

Compatible with PlantUML 1.2024+

Pure UML + 20+ specialty diagrams: class, sequence, use-case, activity, state, component, deployment, object, timing, mindmap, WBS, gantt, salt, JSON, YAML, EBNF, regex, ditaa, AWS / Azure / GCP / K8s / Elastic architecture, Archimate, EIP, C4. Paste any PlantUML source — fully compatible.

Templates

Source language

plantuml

Workstation

Studio

Engine id

plantuml

Open in Studio Upstream docs

In the same space

Most users come to PlantUML from Visio or Enterprise Architect. flowss runs this engine in the browser — no install, shareable via URL, exportable to PNG / SVG / PDF / source.

Syntax at a glance

@startuml
actor User
User -> System: login
System --> User: token
@enduml

Paste this in the Studio code pane to see PlantUML render live. The full grammar is at the upstream-docs link above.

Sample templates

All 80 →

uml

PlantUML — Fuzzy Delphi / MPSI Activity

Detailed activity diagram of a Fuzzy Delphi, MPSI and QI computational methodology.

uml

PlantUML — Class Diagram

Pure UML class diagram with interfaces, generics and stereotypes.

uml

PlantUML — Sequence Diagram

Sequence with activations, alt-blocks and notes.

uml

PlantUML — Use Case

Classic UML use-case with actors and include/extend.

uml

PlantUML — State Machine

Composite states and guarded transitions.

uml

PlantUML — Component

Components with ports and interfaces.

Engine reference: plantuml · ← Browse all engines · Quick-start guide