Gephi is the leading visualization and exploration software for all kinds of graphs and networks. Developed by Gephi.org
License: Open Source
Gephi is a powerful open-source graph visualization tool best suited for complex network analysis, while Diagrammix focuses on creating various types of diagrams with a more user-friendly approach. Gephi excels in handling large datasets and offers extensive customization through plugins, whereas Diagrammix is ideal for quick diagramming and collaboration.