rendering flow charts, sequence diagrams, mermaid, PlantUML, WaveDrom, GraphViz, Vega & Vega-lite, Ditaa diagrams. You can also render TikZ, Python Matplotlib, Plotly and all sorts of other graphs and diagrams by using Code Chunk. - Markdown Preview Enhanced

Top 6 Tools to Turn Code into Beautiful Diagrams

• Diagrams - A Python library to draw cloud system architectures in code for rapid prototyping and version control.
• [Go-Diagrams] - A Go-based tool similar to Diagrams for creating cloud system architectures in code.
• Mermaid - A JavaScript library using Markdown-style text to create and update diagrams easily.
• Markwhen / github / vscode / HN - a text-to-timeline tool.
  • can also draw pathway and geographic position according to time
• Markmap
• ASCII Diagram Editors - Tools that render diagrams as ASCII art using plain text, like asciiflow and Monodraw (Mac Only).
• PlantUML - A versatile tool using a domain-specific language to generate various types of diagrams.

see also

• Building awesome diagrams with D2 / online