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