Acronis Backup 12.5 is one of the world’s easiest and fastest backup solution for all your data, whether it is located on-premises, in remote systems, in private and public clouds, or on mobile devices. With enhanced backup validation and blockchain-based authentication of your backups with Acronis Notary™, Acronis Backup 12.5 is one of the most reliable backup solution on the market today.
There are several good backup solutions that offer protection against ransomware - Unitrends, Mozy, Code42 to name a few. Only Unitrends offers a free plan while others require you to purchase a subscription. You can find out more about these products here Best Backup SoftwareBackup Software