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.
rads raids roads reads radios radius readds rods rats rids reds readies roadeos roadies rides rotas rodes ratos roods redds redes rudds rates redos reeds redoes reatas redias riatas rodeos raitas rowdies rots rets ruts riots rites roots rotes rotis rotos routs writs
ads lads chads wads tads deads roads rads naiads kneads meads mads loads leads quads bads goads gads cads heads fads beads pads reads dads duads toads woads shads