Devexpress offer free copy of Devexpress Xamarin.Forms UI control v20.2 from untill November 1, 2021 23:59GMT. You can check from

The free offer contains

  • Xamarin Data Grid v20.2.x
  • Xamarin Scheduler v20.2.x
  • Xamarin Chart v20.2.x
  • Xamarin Collection View v20.2.x
  • Xamarin Data Form & Editors v20.2.x
  • Xamarin Drawer & TabView v20.2.x

Once you register, you can access those control from your personalized NuGet Feed URL and start develop your Xamarin apps