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.
pedros petrous padres paters peters putters padders patters petters pewters pitiers pouters powders powters potters poetries puttiers potteries
hydros pedros biders drys dross madras coders kneaders hydrous duros kidders hiders gadders loaders aiders goitrous headers nodders fodders needers tyros trios dors odors laders leaders heeders faders readers cadres wadders shedders cedars chudders chowders stroys cheders chadors seeders widders wedders cyders tedders outthrows retros deodars padres stereos maduros radars mudders bedders petrous ciders nitroso riders hydras feeders butyrous mudras nitrous cuatros gaydars beaders voiders budders metros guiders torose judders trows ladders madders eiders lauders heteros bidders nadirs padders outrows toros trois adders codders tiros lidars odorous redders madres rudders heders citrous powders nitros torous raiders troys strows taros dodders ridders udders waders seders weeders chadars siddurs cheddars chiders sudors chuddars shaders ceders shudders