Some Packages I wrote:
Numerical linear algebra
Fast Large Scale Eigenvalue problem Solver with Gamblet Method (Matlab)
Machine Learning
Kernel Flow Method for image data (Matlab)
Random matrix based Classification (Matlab) [People nowadays call this sketching :) ]
Operator Learning for Quantum Mateirals (Pytorch)
Material Sciences
1-D and 2-D Quantum Materials dynamics+spectral calculation (Python + Julia)
Quantum
Block Encoding for Pairing Hamiltonian (Python-Qiskit)