Cirq is an open-source quantum computing framework developed by Google, designed for creating, simulating, and running quantum circuits on quantum hardware. It provides an intuitive and powerful platform for researchers and developers to experiment with quantum algorithms.

Features of Cirq:

• Quantum Circuit Design: Enables the creation and manipulation of quantum circuits with an easy-to-use Python-based API.
• Simulation Tools: Includes built-in simulators to test and validate quantum circuits before running them on real quantum hardware.
• Hardware Integration: Supports execution on Google's quantum processors and other quantum hardware via cloud-based services.
• Parameterized Gates: Allows dynamic circuit adjustments with parameterized quantum gates for flexible experimentation.
• Noise Modeling: Provides tools to model realistic quantum noise, helping researchers understand error mitigation strategies.
• Extensibility & Integration: Works seamlessly with other quantum computing frameworks like OpenFermion and TensorFlow Quantum.

Installation Directory: /usr/local/lib/python3.x/site-packages/cirq

To check the installed version, use: python -c 'import cirq; print(cirq.__version__)'

Disclaimer: Cirq is an open-source project released under the Apache 2.0 license, maintained by Google and the quantum computing community.