Free Disk-O: Alternatives
Disk-O: is described as 'mounts cloud storages as network drives and let your applications access your cloud files like a part of the file system. Works with WebDAV, Google Drive, Dropbox, Yandex.Disk and Mail.Ru Cloud'. There are five alternatives to Disk-O: for various platforms. The best alternative is Rclone, which is both free and Open Source.