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.
pyros pros praos prows prose proso prosy proas pyres pross pareos porose parous porous purs prossie pars prays peres prise presa prees parrs purrs perse purse preys praus pores pares peers prase pries paras pairs prese priss piers press puris pears parse peris pours paris pareus purees peruse hypers praise pooris pursue paries pariahs parries peeress peeries perries prez
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