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.
triode trode trod triad trite tried trade torrid toroid deride tirade tarried hydride turd trot trad tret tared treat trout trait tardy trued tardo treed tired druid tread dried tyred torte tarot torot droid turret treaty teredo terret hydrid tarred territ terete teared toured tiered trouty diorite hydroid
triode horde ureide rode deride pride oroide oreide gride corrode joyrode joyride hayride ride fiord erode bride bourride boride rodeo period sarode hydride trode chorioid
trio taro tiro tori torii toro trow troy tyro atria rioter stria striae strow stroy