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.
hydride hydrid hydroid deride hydrate dried droid druid triode diorite droit trite dread triad tried trade dured dared dreed trode dorado tirade toroid torrid tarried
hydride ride triode oroide hydrid druid droid dried deride pride boride oreide gride joyride hayride bride bourride hydroid ureide rid
hydria hydriae hydra hydrae hydro