From a system resource perspective BlackFog Privacy was designed to be very lightweight. In fact, the BlackFog Privacy executable occupies approximately 2MB of drive space and the whole package around 20MB. It has been developed in the same language as the underlying operating system and has no dependency on other runtime frameworks, so it is very fast.
BlackFog Privacy has a small memory footprint of around 25MB and uses less that 5% CPU at its peak. Routinely you will see it around 1-2% on a very active machine.