GraphBLAS is underrated and underused IMHO. If you use e.g. scipy.sparse, NetworkX, or similar, you should check out GraphBLAS. It is really fast even compared to scipy.sparse, and more capable in many ways.

They've actually started implementing the NetworkX API

https://github.com/python-graphblas/graphblas-algorithms

with python-graphblas

https://github.com/python-graphblas/python-graphblas