Are there any free downloadable key loggers?

Are there any free downloadable key loggers?

I know there are many many key loggers but I need one that is free, not just for a trial or something where you need to buy it later. I need something free forever that can be downloaded onto a flash drive. Please don’t ask my motive for one, it’s personal. Please I need it ASAP. Thanks.
Also stealth could be a factor so one that has that could work.