🦀 Rust Playground

Write Rust code below and click Run. Everything runs in your browser — nothing is sent to our servers. No signup, no install, no nonsense.

🦀

Rust can't run inline (yet)

Some languages need a real compiler or runtime that doesn't fit in a browser. But you can run Rust instantly on these free platforms:

Sample Rust code:

Rust example
// Memory-safe by default
fn main() {
    let words = vec!["Rust", "is", "fast"];
    
    for word in &words {
        println!("{}", word);
    }
    // Compiler ensures no memory leaks
}

Try these Rust examples

Click any example to load it into the editor:

A note on this playground

Code runs in your browser using open-source engines (Pyodide for Python, native JS for JavaScript, AlaSQL for SQL). Nothing is sent to OneCity's servers. No accounts, no tracking. If you save your work, copy-paste it somewhere else — refreshing the page resets the editor.