ownCloud is a free and opensource file sync and share app which is self hosted.

Yandex.Disk is a cloud service created by Yandex that lets users store files on “cloud” servers and share them with others online. The service is based on syn…

Cryptomator is a multi-platform transparent client-side encryption of your files in the cloud.

AnyClient is a platform independent file transfer client supporting all major file transfer protocols including FTP/S, SFTP, WebDAV/S, Amazon S3 and AFTP.

FolderSync enables simple sync to cloud based storage to and from local folders on the device SD cards.

Microsoft OneDrive is a cloud-based storage solution from Microsoft.

GoodSync is a backup and file synchronization program. It is used for synchronizing files between two directories.

OX Open-Xchange is a web-based communication, collaboration and office productivity software.

Cubby is a flexible way to keep your files organized and accessible, both for individual productivity and shared collaboration.

Joplin is an open-source free note taking and to-do application.