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.
marchesa marches marchese marchesi marshes merches marishes mariachis
marchesa ratches wretches barouches crutches larches grouches marches cratches crotches carritches merches marchese parches caroaches earaches parritches brioches porches broaches searches braches diarchies birches tracheas breaches troches arches rouches reaches caroches riches roaches retches curches lurches grutches ruches creches crouches carroches oraches marchesi rotches parchesi huaraches perches britches preaches brooches soroches rechews torches reechoes trochees breeches churches