The ability of being able find any kind technical document or article, without having it in your personal library! This is one thing I appreciate most from this software application - if you don't have access then that's when we use Google Docs. There are some minor issues with formatting; however they can be easily fixed by using additional font types as well adding borders / margins etc., but nothing major! Overall very good tool!! If used correctly i see no reason not too recommendDevEx over other competitors available out there now days!! We solved our problem searching articles/technical documents which were scattered around different applications (like MS Word). And yes its free so thats another plus point here. !