Additionally to those tools (especially Procmon64.exe), I use Martau TotalUninstall on my workstations to monitor my installed apps and to properly uninstall them. Does a system and registry snapshot before installation, and compares the differences, even if the installer requires a reboot (kernel drivers etc). I know it isn't foolproof for everything, but it gives me a first level of trust on my apps when I want to trace what they install. And when I want to deep further, procmon, sandboxie and VMs help a lot.