Sync.com is cloud storage that offers end-to-end encryption. Unlike other major cloud storage providers such as Google Drive or Dropbox, Sync.com will not be able to peak in on your files stored in the cloud. Google offers their services for free or low cost because they turn around and sell your data to advertisers after they spy on your emails, files, and photos. Sync.com ensures your data stays yours. They are giving away free 5 GB storage to get you in the door and try out their service before purchasing a plan.
Plans start out at $8/month for 2TB of storage and offer team and business plans as well. They have a desktop, Android, iOS, and web apps available. You can set up automatic backup and sync for your desktop and keep your files secure.