Quantumlib Cirq by quantumlib
Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.
About Quantumlib Cirq
From the project's README at github.com/quantumlib/Cirq. Lightly cleaned for readability; for the full source see the upstream repo.
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Python package for writing, manipulating, and running quantum circuits on quantum computers and simulators.
[](https://github.com/quantumlib/Cirq/blob/main/LICENSE) [](https://www.python.org/downloads/) [](https://www.bestpractices.dev/projects/10063) [](https://pypi.org/project/cirq) [](https://doi.org/10.5281/zenodo.4062499)
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 4.9k | github.com/quantumlib/Cirq |
| GitHub forks | 1.2k | github.com/quantumlib/Cirq |
| PYPI downloads (last month) | 109k | cirq |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 8.4 years | since Dec 2017 |
| Last commit | 2 days ago | May 5, 2026 |
| Releases shipped | 30 | last: 9 months ago |
| Security policy | SECURITY.md | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
What people say on Hacker News
Ready to self-host Quantumlib Cirq?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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