Mermaid

Image shows:	flow diagram
Summary
Title:	Mermaid
Description:	A diagramming language. Make diagrams and flowcharts for documentation, easier. With simple syntax, create sophisticated diagrams, flowcharts, GANTT Charts etc.
More
Notes:	Use the online editor to create your diagram
Example:	See the example diagram at Sales Cycle

Editing a complex diagram and integrating that into your documentation shouldn't be hard. The Mermaid.js library makes diagrams of all types accessible through simple markup. Using the MediaWiki extension, brings the power of Mermaid diagrams to your wiki. The Semantic MediaWiki (sandbox) website shows some examples of Mermaid markup plus the MediaWiki parser function https://sandbox.semantic-mediawiki.net/wiki/Mermaid

Live Editor
Syntax Reference
MediaWiki extension page https://www.mediawiki.org/wiki/Extension:Mermaid
MediaWiki extension repo on GitHub https://github.com/SemanticMediaWiki/Mermaid

Code for a GANNT Chart

{{#mermaid:gantt
	title A Gantt Diagram
	dateFormat  YYYY-MM-DD
	section Section
	A task           :a1, 2014-01-01, 30d
	Another task     :after a1  , 20d
	section Another
	Task in sec      :2014-01-12  , 12d
	another task      : 24d
}}

produces

Flow Chart

{{#mermaid:graph TD
A[Christmas] -->|Get money| B(Go shopping)
B --> C{Let me think}
C -->|One| D[Laptop]
C -->|Two| E[iPhone]
C -->|Three| F[fa:fa-car Car]
}}

produces

Sequence Diagram

{{#mermaid:sequenceDiagram
	Alice->>+John: Hello John, how are you?
	Alice->>+John: John, can you hear me?
	John-->>-Alice: Hi Alice, I can hear you!
	John-->>-Alice: I feel great!
}}

produces

Class Diagram

{{#mermaid:classDiagram
	Animal <|-- Duck
	Animal <|-- Fish
	Animal <|-- Zebra
	Animal : +int age
	Animal : +String gender
	Animal: +isMammal()
	Animal: +mate()
	class Duck{
		+String beakColor
		+swim()
		+quack()
	}
	class Fish{
		-int sizeInFeet
		-canEat()
	}
	class Zebra{
		+bool is_wild
		+run()
	}
}}

produces