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.
saturate striate sturt stearate strait strata strati sutured citrate strette seatrout strut street stared stride strode sturdy stored starred storied stretti stretto striata satyrid stirred siderite start stroud
maturate saturate deuterate striate literate citrate reiterate rehydrate patriate outrate nitrate moderate deaerate quadrate iterate federate butyrate hydrate derate stearate dehydrate titrate
satara satire satori satyr stour stoure stourie stoury suture