Rclone is a command line program to sync files and directories to and from
- Google Drive
- Amazon S3
- Openstack Swift / Rackspace cloud files / Memset Memstore
- Dropbox
- Google Cloud Storage
- Amazon Drive
- Microsoft One Drive
- Hubic
- Backblaze B2
- Yandex Disk
- The local filesystem
Source: rclone – rsync for cloud storage
This looks interesting. It’s open source on Github, cross platform, and could solve any number of issues when working in the cloud.