PC alternative (3)
I believe the answer is:
mac
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pc alternative</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for mac that I've seen before include "It may help you keep dry" , "PC" , "Coat - computer" , "Waterproof coat (colloq.)" , "A Gaelic son, often in name" .)