Hi everyone! I'm the lead developer of Zas Editor. I wanted to share some details about the editor you might be interested in. The text-storage data structure, syntax highlighting and search features are written in Rust, and the UI is written in Swift since we wanted to create a native macOS experience. The Swift and Rust code talk to each other using C FFI, and no, that doesn’t take away the safety features of both…
You may want to make it more obvious this is a native Mac app, not cross-platform. I ignored the window decorations and shortcuts (like I usually do), as those are commonly shown under the assumption of the developer's preferred OS; there's no definitive statement that this is a Mac-only app until the very bottom.