Mermaid
Mermaid is a JavaScript-based diagramming and charting tool that uses a simple markdown-like syntax to generate diagrams and flowcharts dynamically. It allows developers to create visual representations such as flowcharts, sequence diagrams, Gantt charts, and class diagrams directly in documentation or web applications without needing external drawing tools. It is often integrated into documentation systems, wikis, and code editors to visualize complex processes and structures.
Developers should learn Mermaid when they need to embed diagrams in technical documentation, README files, or web applications to improve clarity and communication of workflows, architectures, or data flows. It is particularly useful in agile development, software design, and project management contexts where visual aids enhance understanding, and it integrates seamlessly with tools like GitHub, GitLab, and VS Code for real-time diagram rendering.