I like Viper and it is fast. It is also easy to see exactly where and how the plagiarism took place. As a side issue it can also find references Best Amy Amy Price PhD Empower 2 Go Building Brain Potential Http://empower2go.org Sent from my iPad On 3 Dec 2012, at 12:51 PM, "Makretsov, Nikita [PH]" <[log in to unmask]> wrote: > Viper is a free software, as good as Turnitin. > > My essays got ratings <1% plagiarism, so I've tested the specificity. > > Just Google it > , > > Nik Makretsov,MD > Vancouver