Software trial (4,4)
I believe the answer is:
beta test
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">software trial</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for beta test that I've seen before include "trial in late stages of development" , "product trial" , "Final stage of software trial" .)