Stop installing.
Start discovering.
Quantum computing is hard enough. Your tools shouldn't be. Write Python + Qiskit in your browser, run it instantly, and share your results with a link — not a screenshot.
Result: {'011': 984, '101': 16}
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The tools you wish you had
Quantum computing is complex. Your workflow shouldn't be.
Skip the setup
No conda environments, no dependency conflicts, no hours lost to configuration. Qiskit, PennyLane, and Cirq — pre-configured and ready.
Results anyone can reproduce
Versioned notebooks, pinned dependencies, and one-click re-run. What works on your machine works for everyone — forever.
Share a link, not a screenshot
Publish your notebook in one click. Anyone with the link can view, fork, and build on your work. No PDF exports, no copy-paste.
An AI that knows quantum
Debug circuits, optimize gates, explain results — all in natural language. Your copilot understands superposition, not just syntax.
No hardware, no problem
Run in the cloud instantly. No GPU required on your machine, no queue times, no credits to manage. Just code and results.
Learn from the best
Fork public notebooks from researchers and peers. See how others approach problems. Quantum knowledge should compound, not silo.
From zero to shared in three steps
No configuration files were harmed in the making of this workflow.
Write
Open a notebook and start coding. Python, Qiskit, and your favorite quantum libraries — all ready to go. No installs, no YAML files, no Stack Overflow threads from 2019.
Run
Hit execute. Your code runs in a secure sandbox and streams results as they compute. No GPU rentals, no cloud credits, no waiting for a slot to open up.
Share
One click, one link. Your notebook is live. Colleagues can view, fork, and build on your work instantly. Science moves at the speed of collaboration.
Frequently asked questions
- What is catstate?
- Catstate is a browser-based platform for writing, running, and sharing quantum computing code. It gives you a fully configured Python environment with Qiskit, PennyLane, and Cirq — no installs, no configuration, no dependency conflicts. You open a notebook, write code, and execute it instantly in a secure cloud sandbox.
- How do I run quantum code without installing anything?
- Catstate runs your code in isolated cloud sandboxes. Each notebook gets its own secure environment with all major quantum libraries pre-installed. You write Python in your browser, hit execute, and results stream back in real time. No GPU required on your machine, no conda environments to manage, no cloud credits to purchase.
- Which quantum frameworks are supported?
- Qiskit, PennyLane, and Cirq are pre-configured and ready to use. You can also install any PyPI package your notebook needs — just add it to your requirements and catstate handles the rest. If it runs in Python, it runs on catstate.
- How do I share my quantum results with others?
- One click publishes your notebook. You get a shareable link — anyone with the link can view your code, outputs, and results. They can also fork your notebook to build on your work. No more screenshotting Jupyter, no PDF exports, no copy-pasting results into Slack.
- Is catstate free?
- Catstate is currently in private beta. We're onboarding users gradually to ensure a great experience. Join the waitlist and we'll let you know as soon as a spot opens up.
- How is catstate different from running Jupyter locally?
- Zero setup, instant sharing, built-in AI assistance, and reproducible environments by default. No conda hell, no "works on my machine" problems, no configuring remote access to share results. Every notebook is versioned, every dependency is pinned, and every result is reproducible — forever.
Join the waitlist
Be the first to know
Catstate is in private beta. Drop your email and we'll let you know when it's your turn.