Can an windows 8.1 tablet run any PC Desktop app?

AfterLife6

Honorable
Aug 14, 2013
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Im sorry, I didn't know where to put this question so I placed it in here, im sorry if it isn't the right place

My question is, can a tablet with Win 8.1, like the Acer Iconia W1-810, run any desktop program (that's not in the store, a normal program like power iso, vlc player, or any other?
Because I have a friend who is going to buy one to use some astronomy-related programs and he would like to run them on a tablet

thanks in advance