PennyLaneAI/pennylane
An open-source Python library for quantum computing with explicit support for quantum machine learning using automatic differentiation and neural network integration.

PennyLane is a cross-platform quantum computing library that enables differentiable programming of quantum circuits. It integrates with popular classical ML frameworks including PyTorch, TensorFlow, and JAX to support hybrid classical-quantum workflows. The library provides tools for quantum machine learning, quantum chemistry simulations, and optimization of quantum algorithms using automatic differentiation.