# PennyLane

Xanadu's open-source framework for quantum machine learning, chemistry and differentiable quantum programming.

PennyLane is Xanadu's open-source library for differentiable programming of quantum computers. It connects quantum circuits to machine learning frameworks such as PyTorch, TensorFlow, JAX and NumPy, and runs on simulators or real hardware from many vendors through a plugin system. Its quantum chemistry and QML modules are widely used in research.

Price: Free, open source (Apache 2.0). Site: https://pennylane.ai/.

Also on the [web page](https://quantumcompanies.fyi/apps/pennylane).