zserge’s webview has been adopted by a bunch of maintainers who made Rust bindings for it. They have forked webview to continue maintaining it, and are now gradually rewriting it in Rust.

https://github.com/Boscop/web-view

Made on top of that is Tauri, a cross-platform webview-based app just like WebWindow. The key differentiator being that they are actually committed to continuous development as they’re trying to get established as an open source company.

https://github.com/tauri-apps/tauri