Assuming XXCLONE really has been abandoned, a search for an alternate came up with several candidates. After unsuccessfully trying them all, Clonezilla emerged to my attention.
For my computer, Windows 10 Home 64bit, AMD3+ cpu, it seems that Clonzilla works. Yesterday, I tried working with Clonezilla, has a steep learning curve. My first attempt was from a 256 SSD drive to a 512 SSD drive. The target 512 SSD drive was set up as a full 512 gig partition, but when the clone process completed, the target was now a 256 gig drive. I extended the 256 to the full 512 and to my disappointment, the drive is no longer bootable. All the files are there untouched. In theory, perhaps I could have set up the remaining 256 as another partition/drive, but I chose not to do so.
I chose to visit Memory Express this morning and picked up a 256 SSD drive. After setting it up as a 256 empty formatted drive, I restarted Clonzilla and this time, the clone emerged consuming the full 256 gigs and booted normally.
There is nothing in the Clonzilla documentation that indicates that both source and target drives should be same size. I chose the TuxBoot approach to create a bootable USB stick running Clonezilla. Looks like it is running under an OpenSource operating system, very crude graphic display. But it works. Stay tuned....