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.
tyros tiros trois toros taros trios troys trows tyres hydros torose torous triose tors hydrous tres tars tores tires torse trees trass torrs tress toras tears tares terse truss torus duros treys tiers trays trooz trews torsi tahrs trues tries tours dross tarsi torso trousseau drowse torahs terais drowsy tarres tories drossy terras hydras hydrase tarries terries yttrias terrazzo dors drys
gyros tyros pyros giros prose kaross harrows brose parous erose vrows guiros faros gross burros cheeros crows kouros morros eyras borrows frows byres gyrus barrios proas barrows bros churros charros hydrous duros tyres zeros trows trios brosy torose tiros brios prows biros ceros porous sorrows marrows saros serous narrows cirrose heroes roes pharos pross gyrose furrows aurous gyres rosy euros vireos karoos grows rose eyres broos prosy pareos burrows farrows heros cross karroos porose froes troys lyres arose zeroes dross brows rows pyres pros cerous arrows serosa cirrous serows curios praos eros proso hydros morrows taros toros morose torous trois ferrous cheerios rerose chiros yarrows
tyro taro tiro toro trio trow troy tyre strow stroy