Backup and Sync (Google Backup and Sync) is a program for synchronizing data from Google Drive and Photo Services, which is a connection and direct successor of separate Drive and Photo clients. It enables automatic data transfer between a computer and a virtual disk in the cloud to provide additional data security.
Microsoft OneDrive (formerly SkyDrive) is a small application that allows access to data stored as part of the OneDrive service offered by Microsoft, directly from the operating system (without the need to launch an Internet browser).
Yandex.Disk is a disk-based program for the Russian company Yandex. The program offers the option of automatically synchronizing files with the cloud, as well as taking screenshots and publishing them in the cloud.
Air Explorer is an unusual file explorer that allows you to manage both local files and collected in various cloud-based network services in one place. The program supports the most popular accounts of this type and allows to significantly facilitate the work with many such services at the same time.
Cryptomator is an open and free data encryption tool that has been designed to work with all online disks that use synchronization mechanisms with local catalogs. The entire encryption takes place on the client's side so that the data does not fall into the hands of unauthorized persons