I think some Rust components have been written and integrated into Firefox. But the core Firefox codebase - including Gecko - is still C++ so it's not easy use

I think some Rust components have been written and integrated into Firefox. But the core Firefox codebase - including Gecko - is still C++ so it's not easy use Rust there. https://wiki.mozilla.org/Oxidation https://wiki.mozilla.org/Oxidation On a related note, Chrome is looking at integrating Rust into its C++ codebase. https://www.chromium.org/Home/chromium-security/memory-safety/rust-and-c-interoperability https://www.chromium.org/Home/chromium-security/memory-safet...