1)   McGill English Dictionary of Rhyme 1.1
Free software rhyming dictionary derived from the award-winning McGill English Dictionary of Rhyme, which is used by tens-of-thousands of writers, educators, students, aspiring poets and songwriters from over 100 countries.

 2)   McGill Rhyming Dictionary & VersePERFECT 2.0
Free popular rhyming dictionary and verse editor for songwriters used by over one-hundred thousand people from over 100 countries. Created by American author Bryant McGill, Adam Markowitz, Jim Karol, Chantelle Paige, Bobbi Billard and Jeff Kozlowski.