Save-as file dialog in built application

Hello! I'm making an application in unity that requires a save-as dialog to show up. I've been using EditorUtility.SaveFilePanel, but I recently tried to build my application and it turns out that this is ONLY available when you're running your game from the editor. (lol wtf?)

Does anyone have an alternative for opening a simple file browser where I can select where to save something and what to name it? Bonus points if it's not windows-only and if your method also has a way for users to select which file to open.