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