There is also this one: https://cycle.travel/

Uses OpenStreetMaps and favours quieter roads. Has the option to include or exclude paved routes.
Easy export of files for use in any app.
Where available it has a direct link to Google Streetview and also shows accommodation options per route or per area.

I'm a tourer and have used this all over Europe, so obviously it comes with the usual proviso of not trusting any online planner 100%.
In comparison to the likes of Komoot or RWGPS it produces quieter routes. It may not be for everyone.