#Network Topology Diagram
Draw.io
Draw.io is a powerful and completely free online diagramming tool that supports creating various professional diagrams such as flowcharts, mind maps, network topology diagrams, and UML diagrams. No installation is required—use it directly in your browser, making it an ideal alternative to Visio.
OmniGraffle
OmniGraffle is a professional diagramming software for macOS, used for creating flowcharts, mind maps, UI interfaces, and network topology diagrams. It offers powerful vector drawing tools and a rich library of templates, meeting the design and planning needs of professionals.
ProcessOn
ProcessOn is a professional online tool for creating mind maps and flowcharts, supporting various diagram types including flowcharts, mind maps, prototypes, and UML. It offers real-time collaboration features, making it ideal for team project management and personal knowledge organization.