Graphviz

As open source graph visualization software, Graphviz converts structural data into meaningful diagrams through declarative text descriptions. Engineers widely use it to model and communicate complex systems—from network topologies to software dependencies—without manual drawing. Its automated layout engines arrange elements optimally, ensuring readability. Support for standard formats like SVG, PNG, and PDF enables seamless inclusion in documentation or presentations. The tool’s flexibility and scripting compatibility make it a staple for data-driven diagram generation in technical projects.