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.
In the same space
Most users come to PlantUML from Visio or Enterprise Architect. Glyph 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
@endumlPaste this in the Studio code pane to see PlantUML render live. The full grammar is at the upstream-docs link above.
Sample templates
All 72 →Detailed activity diagram of a Fuzzy Delphi, MPSI and QI computational methodology.
Pure UML class diagram with interfaces, generics and stereotypes.
Sequence with activations, alt-blocks and notes.
Classic UML use-case with actors and include/extend.
Composite states and guarded transitions.
Components with ports and interfaces.
plantuml · ← Browse all engines · Quick-start guide