DAVx⁵ (WebDAV) has been successfully tested with infiniCloud.

InfiniCloud is a Japanese cloud provider that offers cloud service for file access (including WebDAV). It is aimed on high availibility and reliability.

WebDAV setup

You can access your IceDrive files using the DAVx⁵ WebDAV mounts feature.

WebDAV URL: https://<yoursubdomain>

User name and password: your Your InfiniCLOUD User ID and your app password (you need to enable third party apps first and generate an extra password)