Trial version of Product Key Explorer is more trying than trial .
The "trial version" of this product would not open on my Vista Laptop, even after repeated installs/uninstalls. Going to the website (finally) was what convinced me to quit. Per the Nsasoft website, the "trial version" of Product Key Explorer "is free to try 15 days, the trial version allows to see retrieved products and if it is possible to recover you product key instead of real serial number it shows first 4 digits of product key." In my book, that makes the trial version little more than a pointless diversion.
Pros: nothing, couldn't get it to work
Cons: a working product
a trial version that isn't just a come-on for a purchase