Yes of course @saitobenkei , thanks for your clarification.
We are aware of this
We have evaluated all the other possibilities and we have also dealt with the Nextcloud friends who have always used Sabre/dav.
They also confirmed to us that there is currently no other valid Open project like Sabre/dav.
We are counting on being brought forward by the vast community that is using this project as there are also several large companies that use it.