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.
rector reactor rectory requiter rocketer rocketry rogatory racketeer racketier ricketier rocketeer raggeder ruggeder
actor hector vector sector lector factor victor doctor rector lictor reactor coactor factory nectar negator rogatory quittor nugatory locator legator gator victory ecotour rectory locutory equator yakitori
recta recti recto react recked recoat recode recut wrecked erect precode precut