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quantumlib
Home / Python / Cirq

quantumlib/Cirq

Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.

Python ◇ algorithms Apache-2.0
★5.1KSTARS
⑂1.3KFORKS
!131ISSUES
🏆#2,371GLOBAL RANK
🔥1DAYS TRENDING
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⚡ Executive Summary & Quick Facts

Authoritative Source

Cirq is Cirq is an open-source project written in Python: Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits..

Repository quantumlib/Cirq ↗
Primary Category algorithms
Language & Stack Python
Software License Apache-2.0
Community Traction ★ 5.1K stars · ⑂ 1.3K forks · #2,371 globally
Maintenance ● Active (Last commit: Oct 21, 2026) · 131 open issues
Target Audience Developers and engineering teams building with Python, seeking reliable, tested, and actively maintained tooling for production workloads.

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Momentum

+127

STARS · LAST 30 DAYS

4

PER DAY

#372

MOST-STARRED Python

Window7 days30 days90 days
Stars gained+28+127+360
Per day444
Forks gained+6+26+65

Cirq gained 127 stars in the last 30 days, about 4 a day, and now has 5.1K. It is about 9 years old and has averaged roughly 565 stars a year. It ranks #372 among Python repositories and #2,371 across all languages on GitHubRepo.

Trending Record

Cirq has maintained a continuous presence across global trending indexes, peaking at #5984. Below is the 30-day activity profile:

💡 Overview

Cirq is an open-source project written in Python: Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.

Engineered for speed, consistency, and developer ease, it solves common hurdles in algorithms, api, cirq. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.

⚡ Key Features

1

Optimized execution pipeline written in Python for predictable speed.

2

Zero-friction configuration with comprehensive sensible defaults out of the box.

3

Cross-platform runtime support across Linux, macOS, and Windows environments.

4

Strong typing and modular architecture designed for easy extension and maintainability.

5

Standardized CLI and API interfaces for smooth integration into CI/CD workflows.

6

Active community maintenance with regular dependency updates and security patches.

📥 Installation

terminal
$ pip install Cirq

⚙ System Requirements

Platforms

  • • macOS
  • • Linux
  • • Windows

Runtime & Dependencies

Python >= 3.9, pip, virtualenv

Architecture

x86_64, ARM64 (Apple Silicon & Graviton)

🧠 How It Works

Cirq coordinates its core functionality through a modular Python pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.

🎯 Production Use Cases

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Cross-Platform Web Apps

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🚀 Getting Started

1

Install Cirq using your package manager: `pip install Cirq`

2

Initialize your project workspace or configuration file for Cirq.

3

Import Cirq into your codebase or invoke it directly from your terminal.

4

Execute your test suite or run `Cirq --help` to verify successful setup.

👍 Strengths

Active community backing with 5,086 GitHub stars and verified adoption.
Permissive open-source distribution under the Apache-2.0 license.
Built in Python for high execution speed and developer familiarity.
Cross-platform compatibility across modern Linux, macOS, and Windows environments.
Clean modular design allowing flexible configuration and pipeline integration.

⚠️ Considerations

Requires familiarity with Python and modern CLI workflows.
Ecosystem extensions may require manual configuration depending on environment constraints.
Active development roadmap means breaking API changes may occur across major versions.

⇄ Alternatives & Direct Competitors

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👥 Who Should Use This

Developers and engineering teams building with Python, seeking reliable, tested, and actively maintained tooling for production workloads.

🏆 Nearby in the Rankings

quantumlib/Cirq is currently ranked #2,371 by stars across every repository tracked on GitHubRepo. These are adjacent projects:

RankRepositoryLanguageStarsAction
#2,366 aiortc/aiortc Python ★ 5.1K Compare ↗
#2,366 apache/iggy Rust ★ 5.1K Compare ↗
#2,368 mimblewimble/grin Rust ★ 5.1K Compare ↗
#2,369 jeremyevans/sequel Ruby ★ 5.1K Compare ↗
#2,370 domcyrus/rustnet Rust ★ 5.1K Compare ↗
#2,371 quantumlib/Cirq This Project Python ★ 5.1K
#2,371 mistralai/mistral-vibe Python ★ 5.1K Compare ↗
#2,371 omlahore/RemoveMacAI Swift ★ 5.1K Compare ↗
#2,374 apache/ignite Java ★ 5.1K Compare ↗
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Frequently Asked Questions

What does Cirq do? +

Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.

What language is Cirq written in? +

The primary language is Python. Topics include: algorithms, api, cirq, google, google-quantum.

Is Cirq actively maintained? +

Yes, the last recorded push was on Oct 21, 2026 with 131 open issues being tracked.

How many stars does Cirq have? +

Cirq has 5,086 stars and 1,294 forks on GitHub.

How does Cirq rank among GitHub repositories? +

With 5,086 stars, quantumlib/Cirq is ranked #2,371 globally across all repositories tracked on GitHubRepo and #372 among Python projects.

What license is Cirq distributed under? +

The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.

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