:*Hi. The first thing I noticed is "many"! It is weasel word. The article should not have any statement on the number of such tools without a source; be it an accurate numeric one (e.g. 83479 or 19) or a vague weasel word (e.g. "many", "numerous", "a handful"). 

 ::About the rest, I'll think about it later. 
 ::Best regards, 
 ::