Friday's GOTD included MiniTool Partition Wizard 11. Installation & activation put everything in the program's folder with one exception, 3 driver files that are put in Windows\ System32\ -- pwdrvio.sys, pwdspio.sys, & pwNative.exe -- while the entries necessary for the drivers to work are added to the registry. If you copy the program's folder and run MiniTool Partition Wizard 11 it seems to work fine, as if it was a portable app, but those 3 files & their related registry entries will be automatically added or installed, which *by strict definition* means MiniTool Partition Wizard 11 is not portable. IOW while it seems to work fine as a portable app, it does make changes to the copy of Windows it's run on.
There is one thing to note: MiniTool Partition Wizard 11 comes in 32 & 64-bit versions, with both included in the setup file. If you install the software in a copy of 64-bit Windows, it's not going to run portably or otherwise in a 32-bit copy of Windows.