Yes, both IBackup and BackupSheep offer a Free Trial.
IBackup is designed for Large Enterprises, Medium Business and Small Business.
BackupSheep is designed for Freelancers, Medium Business and Small Business.
Pricing for IBackup Starts at $9.95/Month whereas for BackupSheep Starts at $25/Month.
Some top alternatives to IBackup includes BackupVault Cloud Backup, IDrive Online, Livedrive, NovaBACKUP Cloud, Jungle Disk Encrypted Cloud Backup, ADrive Enterprise, MyPCBackup, ZipCloud and BDRSuite.
Some top alternatives to BackupSheep includes Carbonite, Backblaze, SimpleBackups, BackupVault Cloud Backup, NovaBACKUP Cloud, Handy Backup, IBackup, BDRSuite, Bakup.io and AWS Backup.