Memory safety without a garbage collector

Rust Compiler Online — Run Rust Code in Your Browser

Rust's ownership and borrow-checker system catches memory bugs at compile time instead of runtime — no garbage collector needed. It's the language most often reached for when people want C++'s performance without C++'s footguns.

fn main() {
    println!("Hello, world!");
}

What people use Rust here for

• Getting a feel for the borrow checker on small examples before a bigger project
• Working through the Rust Book's exercises without a local toolchain
• Testing how ownership rules apply to a specific pattern

No installs, no signup

Code you write here runs on a real, self-hosted Judge0 execution backend — actual Rust compiler or interpreter output, not a simulation. A real rustc compile runs first, so borrow-checker errors show up exactly as they would locally — including the ones that take a few tries to actually understand. See the full list of supported languages or read more about how AnyCompiler works.