you know this really has been a fascinating thread...i came to this forum looking for lyric ideas and, after considering the concept of "rhyming software", realized that good lyrics are about fleshing out an idea and NOT really about the rhymes, so in a way a rhyming dictionary wont really help very much in becoming a better lyricist because underneath the rhymes there has be a real talent, passion, and insight.
rhyming software wont really help you much more then downloading protools and letting it languish on your DAW would...you gotta PRODUCE some will be good some will be sh!t like everything else in life hard work makes it own luck...if you wanna write better lyrics then start working harder at it...
good luck thxs for the listening...
- fa