Gephi

Gephi provides a visual environment for exploring and analyzing large graph structures, supporting networks ranging from a few nodes to tens of millions. It includes built‑in algorithms for community detection, centrality calculation, and clustering, allowing users to uncover structural patterns in social, biological, or other connected data sets.

The platform offers interactive data manipulation through a spreadsheet‑like interface and supports importing multiple graph formats. Users can apply various layout algorithms such as Force Atlas 2 and OpenOrd, and customize node and edge appearance based on attribute data, producing publication‑ready visualizations that can be exported as high‑resolution PNG, PDF, or SVG files.

Gephi is an open‑source, GPL‑licensed project maintained by a community of contributors and is widely cited in academic research across many disciplines. It runs on macOS and is positioned as a stable, free tool for researchers and analysts who need to visualize, filter, and analyze complex networks.