Product Keys

Hello All,
I am looking for some software that can pull the product keys off of computers. I work for a real estate company in a resort area and well I'm sure you can only quess as to what the salt air does to computers. Needless to say we have to replace our machines a little more often then would be the norm andseem to have more then our far share of hardware failures. I have found a few product key softwares out there but they all seem to only focus on microsft products. i need one that is going to be able to pull them all. Any suggestions?

Hey friend , i think you question is very simple as consumer side but not good from preoduct/company perspective. As much i have knowledge there is no such key for all product :( . please reply me if you find the same.