Quantum JavaScript
Quantum computing in your browser.
Quantum JavaScript launched on April 30, 2020 with 210 votes, #131 of 5,003 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 6 years on.
In plain words
Quantum JavaScript is a life and fun tool launched in 2020 that works with JavaScript. The product is designed for developers and programmers who want to explore quantum computing concepts through JavaScript programming. It stands out by making quantum computing principles accessible to JavaScript developers without requiring specialized quantum computing knowledge or equipment.
written from the facts on this page · September 2026
From the sources
Q is a quantum circuit simulator, drag-and-drop circuit editor, and powerful JavaScript library that runs right here in your web browser . There’s nothing to install and nothing to configure, so jump right in and experiment. (Q recently celebrated our one-year anniversary. You can read the corresponding post on Medium , the discussion on Hacker News , and the thread on Reddit .) Here’s your first quantum circuit—a Bell state . It uses superposition and entanglement to calculate. ( And here’s how to make one yourself. ) Tap and drag the tiles around to get a feel for the Q editor. It’s easy to use on both desktop and mobile devices. Made a mistake? Just tap the Undo button. Edit the code…from quantumjavascript.app
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