igraph
Fiscal Host: Open Collective Europe
igraph is a collection of network analysis tools with an emphasis on efficiency, portability and ease of use.
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igraph is all of us
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About
igraph enables fast network analysis across the sciences. Its highly optimized core is programmed in C, on top of which igraph offers interfaces to high-level languages: R, Python and Mathematica. This is a unique feature among network libraries and greatly lowers the barrier to entry for new users.