igraph

igraph
Original authorsGábor Csárdi and Tamás Nepusz
DevelopersGábor Csárdi, Tamás Nepusz, Szabolcs Horvát, Vincent Traag, Fabio Zanini and Daniel Noom
Initial release2006 (2006)
Stable release
1.0.1  / 26 December 2025 (26 December 2025)
Written inC and C++
Operating systemCross-platform
TypeScience software
LicenseGPL-2.0-or-later
Websiteigraph.org
Repository

igraph is a library collection for creating and manipulating graphs and analyzing networks. It is written in C and also exists as Python and R packages. There exists moreover an interface for Mathematica. The software is widely used in academic research in network science and related fields. The publication that introduces the software has 13502 citations as of July 3, 2024 (2024-07-03) according to Google Scholar.

igraph was originally developed by Gábor Csárdi and Tamás Nepusz. It is written in the C programming language in order to achieve good performance and it is freely available under GNU General Public License Version 2.