You still need access to native menus, clipboard, dialogs, drag&drop, etc. There are no light multiplatform libraries for that afaik. Either you'll use Electron

You still need access to native menus, clipboard, dialogs, drag&drop, etc. There are no light multiplatform libraries for that afaik. Either you'll use Electron, which is more or less these services + browser. Or you'll use some of full multiplatform GUIs, which all have their limitations and drawbacks. Potentially you can use hybrid - web control inside one of multiplatform GUIs (if web control is available at all), but you'll have to reimplement some IPC stuff for communicating with web part. That part already exists for Electron. And you'll still have to rely on this multiplatform GUI and deal with its issues. There's also a matter of trust, Electron if nothing else has VS Code, so we all know that production ready application is possible, even if it's not trivial. It's not that clear cut for Avalonia, MAUI, etc.