We've talked about CloudMounter from Eltima Software before. It's a great app that takes just about any type of server or cloud service and mounts it on your Mac as if it's a local drive. Sometimes we get terabytes of storage with a service (i.e., Office 365) and don't even use it. CloudMounter (US$29.99, affiliate link will compensate Apple World Today when you make a purchase) makes it simple to take advantage of all that cloud space, clear out room on your Mac, and keep it all safe in the process.
A recent update to CloudMounter now ensures that your data is kept safe by enabling encryption on all of your mounted cloud services, locking them all with one master password. After mounting your various services, encryption can be enabled for one or more.
Now what's really nice is that even if someone happens to steal your password, they can't unencrypt those files unless they're getting in from your particular installation of CloudMounter. Unless they happen to have your Mac and your password, they're going to see nothing but gobbledygook (that's the technical term for encrypted data).
I found the app to be a cinch to use. Installation is straightforward after downloading CloudMounter; basically you just drag the app to your Application folder and you're done. It's possible to try out CloudMounter for 15 days for free to see if it works for you; after that time just purchase a license from the app and you're set.
Once the app is installed, you can add just about any type of server share or cloud service in seconds. CloudMounter supports FTP (regular, with implicit SSL, with TLS/SSL and SFTP), Dropbox, Google Drive, Amazon S3, OneDrive, WebDAV and OpenStack Swift. Within one minute I was able to add three services -- Google Drive, OneDrive and Dropbox -- to the Finder and gain access to over 7TB of cloud storage!
Getting to your cloud drives is simple. There's a menubar icon that lists each of the cloud services individually; just select "Show in Finder" for the one you wish to use and then open the drive icon to start using all that space.
I'm personally making use of all my newfound space by making multiple cloud-based encrypted backups of my Mac data. What use will you find for your easily-accessible cloud accounts?