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.
strata striata strait strati striate stretta sturt strut start stearate saturate street stretti citrate stretto strette seatrout stride sturdy strode stroud stared stored satyrid starred steered steroid stirred storied sutured stereoed
strata butyrate derat stearate citrate reiterate outrate maturate literate moderato quadrate quadrat cutthroat iterate feterita deuterate striata federate treat nitrate dehydrate strati strait saturate retreat rehydrate moderate deaerate literati derate drat hydrate torta trait titrate
straw strawy stray storey astray store stroy stir striae stereo strew story starry stere stare star stair sitar satara stria strow sutra estray