What are some alternatives?
When comparing ChronoSync and Acronis True Image, you can also consider the following products
Time Machine - Time Machine is the breakthrough automatic backup that’s built right into Mac OS X.
Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.
Carbon Copy Cloner - Carbon Copy Cloner (CCC) features an interface designed to make the cloning and backup procedure...
Clonezilla - Clonezilla is a suite of software that's designed to allow you to back-up and image new hard drives with your data.
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
DriveImage XML - DriveImage XML is an easy to use backup and restore program for Windows XP and Vista. Part of Runtime's Data Recovery Software products.