Here is another one https://github.com/wailsapp/wails powered by Golang, but both of tauri and wails do not support BrowserView like feature in Electron, which means you can not build a brave browser on top of them.
Depends on your skill set, wails maybe better, think building a UI based tailscale app, just make the embed web part display directly instead behind a http.Server with extra 3-5 MB