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Life & fun · alternatives · 2026

24 alternatives to Play with real quantum physics in your browser

I wanted to make the simplest app to introduce myself and others to quantum computing. Introducing, Schrödinger's Coin. Powered by a simple Hadamard gate[0] on IBM quantum, with this app you can directly interact with a quantum system to experience true randomness. Thoughts? Could you see any use cases for yourself of this? Or, does it inspire any other ideas of yours? Curious what others on HN think! [0] https://en.wikipedia.org/wiki/Quantum_logic_gate#Hadamard_ga...

Schrödinger's Coin is a browser-based application that lets users interact directly with IBM's quantum computers to flip a coin powered by a Hadamard gate, demonstrating genuine quantum randomness. Designed as an… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Hey HN! I've created a quantum coin flip demo leveraging IBM's quantum computing tech to explore true randomness. It's a primer on into how quantum mechanics can solve classical computing's randomness limitations, crucial for cryptography and secure systems. Would love your thoughts on its application and quantum computing's future role in tech!

    2024 · quantumcoinflip.com · its alternatives →

  2. 2

    Intuitive user interfaces for quantum computing - make it an accessible & business-available technology. We aim to build the standard for interaction with quantum systems.

    2017 · quantumgame.io · its alternatives →

  3. 3
    BlueQubit▲109

    The simplest way to access a quantum computer

    2023 · app.bluequbit.io · its alternatives →

  4. 4

    Quantum computing in your browser.

    2020 · quantumjavascript.app · its alternatives →

  5. 5

    filippo.io/mlkem768 is a pure-Go implementation of the post-quantum key exchange mechanism ML-KEM-768 optimized for correctness and readability.

    2024 · words.filippo.io · its alternatives →

  6. 6

    The quantum computer game

    2016 · mequanics.com.au · its alternatives →

  7. 7

    Lighter web automation with Python. Contribute to mherrmann/helium development by creating an account on GitHub.

    2020 · github.com · its alternatives →

  8. 8

    Hi! I built this to teach myself how a quantum circuit simulator works. It's about 1000 lines of Python, aiming to be understandable more than being fast or robust. It's not meant to compete with anything else - just a personal project to really get clear on the under-the-hood theory of qubits and quantum gates.

    2024 · github.com · its alternatives →

  9. 9

    Simulate reverse causality using quantum suicide. Contribute to karldray/quantum development by creating an account on GitHub.

    2016 · github.com · its alternatives →

  10. 10
    QMsolve▲72

    Visualizing quantum physics with Python

    2021 · github.com · its alternatives →

  11. 11SA

    I built this machine so I could generate Bitcoin keys that I could trust. Air-gapped and simple to use and understand (mechanical). The Satoshi 9000 demo: https://youtu.be/bJiOia5PoGE The key value proposition of the machine is that it generates analog randomness in the physical world and converts it into digital (1’s and 0’s) randomness. Seamlessly. But it occurs to me that it may have other uses beyond crypto keys for your own use, such as: * Randomized clinical trials. Clinical trials need a high degree of transparency for ethical reasons; also, for legal reasons should it…

    2024 · its alternatives →

  12. 12

    T-shirt that emits cryptocurrency for connecting people

    2018 · shop.woppal.com · its alternatives →

  13. 13

    Hey HN. I'm Colton (YC S21, ex-Acorns), one of the founders of Postquant Labs. My cofounder Richard is a cryptographer out of Draper Labs and DARPA. We're building Quip.Network, the first distributed quantum compute network. We just opened our testnet and wanted to share it here. The basic problem: quantum hardware is here and already competitive on certain optimization problems, but for most people, there's no way to access it. The machines cost millions and the hardware and research are gated by the companies who own them. Also, quantum providers regularly have machines sitting idle…

    Apr 2026 · quip.network · its alternatives →

  14. 14

    The chain reaction game about saving Quantum space on iOS.

    2016 · apps.apple.com · its alternatives →

  15. 15

    A puzzle with photons, superposition and quantum measurement

    2017 · quantumgame.io · its alternatives →

  16. 16
    Coinmine▲116

    An in-home crypto mining machine

    2018 · coinmine.com · its alternatives →

  17. 17

    This has been a small labour of love for a few days. Just a fun idea I had to create a single qubit quantum circuit simulator with interactive 3D bloch sphere. Check out my blog post linked on the page for further introduction to quantum computing!

    2024 · dazkins.com · its alternatives →

  18. 18

    Hi everyone, I'm working for a startup called BugFree Software and would love to hear your feedback on a new product we are launching today. Helium is a library that wraps around Selenium to simplify web automation. It does away with many of the technicalities involved with web scripting. For example: Here is a Selenium script. Can you guess what it does? >>> ff = Firefox() ... >>> text_area = ff.find_element_by_id("u_0_1q") >>> text_area.send_keys("Hello World!") >>> button = ff.find_element_by_class_name("_42g-") >>> button.click() Here is the same script rewritten using Helium: >>>…

    2013 · heliumhq.com · its alternatives →

  19. 19

    Pitch, Idea, Discussion, Help, Launch, Crypto, Startup

    2025 · github.com · its alternatives →

  20. 20

    A brightly colored coin flipping app

    2015 · apps.apple.com · its alternatives →

  21. 21

    Play with Quantum Computer in Real world.

    2016 · its alternatives →

  22. 22LQ
  23. 23

    A three-part deep dive into quantum computing

    Apr 2026 · bitcoinquantum.space · its alternatives →

  24. 24

    A pretty simple but fun to play with simulator for a concept from mathematical physics called the "2D Coulomb gas". I originally made this for my Bachelor's thesis to create pretty pictures and build intuition but have recently gotten it a fresh coat of paint and better performance curtesy of WebGPU acceleration (ported with liberal help from Codex to get through all of the boilerplate). Play around with it - hopefully read up more on the 2D Coulomb gas because it is an incredibly deep topic research wise.

    Feb 2026 · simonhalvdansson.github.io · its alternatives →

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