CuPy is described as 'Open-source array library for GPU-accelerated computing with Python. CuPy utilizes CUDA Toolkit libraries including cuBLAS, cuRAND, cuSOLVER, cuSPARSE, cuFFT, cuDNN and NCCL to make full use of the GPU architecture' and is a numerical computation software in the development category. There are more than 50 alternatives to CuPy for a variety of platforms, including Windows, Linux, Mac, Web-based and Python apps. The best CuPy alternative is R (programming language), which is both free and Open Source. Other great apps like CuPy are MATLAB, SageMath, Spyder and SciPy.