Any programming language or software framework that has rapidly gained attention and buzz but is not widely used or proven effective. Sometimes inexperienced technical people will want to use fadware just because it is the latest and greatest, not because they know it will get the job done.
You have to be careful with new developers, sometimes they want to use the newest and coolest fadware instead of sticking with the tried and true.
by PossiblyUseful May 18, 2017
It is literally short for "FUCKING ADWARE", or when adware is so annoying that it is messing with your internet experience
by LtHammer July 14, 2015