What are some alternatives?
When comparing IDrive and Robocopy, you can also consider the following products
Google Drive - Access and sync your files anywhere
TeraCopy - TeraCopy is a compact program designed to copy and move files at the maximum possible speed, providing the user with a lot of features.
Backblaze - Backblaze's remote backup automatically backs up your data to our secure datacenter.
Ultracopier - SuperCopier replaces Windows explorer file copy and adds many features: Transfer resuming, transfer...
Dropbox - Online Sync and File Sharing
FastCopy - FastCopy is the fastest copy, delete, & sync software on Windows.