I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
doobie dobie doby daube dobby tibiae dab deb dib dub doughboy
dobie boobie doobie obe obi kebbie tibiae phobia phoebe cabbie obey lobe cobia obia oboe robe newbie yabbie