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.
hearsays hearses harissas harasses heresies heiresses horses heroizes
hearsays resays bursas jerseys kerseys serosas warsaws
hearsay hears hearse hers haars hairs harass hares harissa heirs heres heresy heros hoars hoarse hoers