I'm looking for some good disk imaging software, so I can store some of my Mac's applications on a flash drive and then export them to a newer machine. Any recommendations? Also, are there any free ones available?
Use Disk Utility.
You can use the New Image button in the toolbar to make a new disk image.
If you can be a little more specific as to what you want to do, I can be more specific as to how you'd use Disk Utility to do it.