A high quality linear algebra library (matrix maths) for the C++ language, aiming towards a good balance between speed and ease of use

FMRIB Software Library

A tool for obtaining maximally-localised Wannier functions

A powerful solver available for LP, QP, QCP, and MIP (MILP, MIQP, and MIQCP) problems

A Powerful Deep Learning Library with GPU Support

A Powerful Library for Computer Vision Applications

A Highly Optimized Linear Algebra Library based on GotoBLAS

Tools and File Structures for Storing and Analyzing Scientific Data

An API for the HDF5 Data Format for Python

The Data Acquisition Library for the Snort IDS