Active@ Disk Image is described as 'disk image software that can do a backup as well as clone the full hard drive. A backup image may be stored on a USB drive, network storage, burned directly to CD/DVD/BR discs, or kept on any other media' and is a Disk Imaging Tool in the Backup & Sync category. There are more than 50 alternatives to Active@ Disk Image for a variety of platforms, including Windows, Linux, Mac, Android and iPhone. The best alternative is Rescuezilla, which is both free and Open Source. Other great apps like Active@ Disk Image are Clonezilla (Free, Open Source), Macrium Reflect (Freemium), dd (Free, Open Source) and Redo Rescue (Free, Open Source).
Rescuezilla is a free, easy-to-use hard drive disk cloning and imaging application that boots as a live USB. Rescuezilla is fully interoperable with Clonezilla. This means that backups created by Clonezilla, can be restored with Rescuezilla (and vice versa).
Protect your data, upgrade your hard disk or try new operating systems in the safe knowledge that everything is securely saved in an easily recovered backup file. Macrium Reflect supports backup to local, network and USB drives.
Redo Rescue can backup and restore an entire system in minutes, with a point-and-click interface anyone can use. Bare metal restore to a new, blank drive and be up and running in minutes. Supports saving to and restoring from local disks or shared network drives.
Acronis Cyber Protect Home Office is a software product produced by Acronis that provides data protection including, backup, archive, access and recovery for Microsoft, macOS, iOS and Android operating systems.
Time Machine is the breakthrough automatic backup that’s built right into Mac OS X. It keeps an up-to-date copy of everything on your Mac — digital photos, music, movies, TV shows, and documents. Now, if you ever have the need, you can easily go back in time to recover anything.
MiniTool ShadowMaker is a backup software for Windows and provides enterprise-level backup. It backs up OS, individual files and folders, disks and partitions to storage devices for file protection with two methods - backup and sync; both support auto backup.