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.
strows stroys straws strews stereos stirs stars satyrs stairs strass stores stours sutras strays stares stress steres steers sitars sitters suiters citrous satoris storeys sataras stories satires souters setters sutures stoures seaters suitors citreous satirise sautoirs hysterias sautoires citrus seders sudors citrusy seeders siddurs satirize sudaries
trows outrows outthrows strows dross hydros pedros toros draws taros cuatros drowse hydrous nitros redraws duros butyrous citrous straws troys drowsy retros metros nitrous maduros tyros petrous odorous tiros nitroso stereos strews heteros goitrous trois trios trews torous torose stroys
strow stroy astray star strawy straw stoury stourie stoure stour satori story strew store stereo stere starry stare stray stria storey stir striae sutra estray