igraph – The network analysis package igraph is a collection of network analysis tools with the emphasis on efficiency, portability and ease of use. igraph is open source and free. igraph can be programmed in R, Python, Mathematica and C/C++. igraph R package python-igraph IGraph/M igraph C library python-igraph 0.9.6, the fourth bugfix release of the 0.9 series, has arrived. The preferred way of