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.
hurrahs hurrays horahs hurries hoorahs hours horas houris harass harries hoorays herries harrows hers hairs horsy hares hires haars hoars hoers hears heirs heres heros horse haeres hearse heresy heroes hirees hoarse horsey harissa hearsay heiress
hurrahs jarrahs sirrahs torahs durras surras sirras arras arrays pharaohs hoorahs horahs hurrays gerahs kerrias murras myrrhs pariahs sierras surahs dourahs terras shariahs ras