Mermaid vs yUML

Mermaid

Development

Mermaid is an open-source tool that allows you to create diagrams and visualizations using text and code. It is designed to integrate with documentation sites and wikis to add charts and graphs through a simple markdown-inspired script language. The key benefit is the ability to generate complex diagrams that are portable, themeable, and easy to edit programmatically.

yUML

Development

yUML is an online tool and service for quickly creating UML diagrams such as use case diagrams, class diagrams, activity diagrams, state machine diagrams, and sequence diagrams. It has a simple syntax for defining the diagrams that allows fast prototyping.