If you're talking about the installers (executables)
, then yes.
If you're talking about the installed programs themselves, then no.
When a program is installed it writes information to other parts of the system; registry, app data folder, etc.
If you were to move the program's folder from it's installed location, reformat, and then try to move it back, it would break it, as a reformat would destroy all of the information, not contained in the programs file.
That's one of the reasons, I keep all of my installers.