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.
caroaches caroches carroches crotches crouches creches curches carritches grouches cratches currachs crutches crashes crushes creeshes grutches gurshes qurshes qurushes
broaches roaches caroaches trochees cratches torches breaches searches brioches porches huaraches oraches earaches larches brooches crouches caroches barouches braches arches rouches rotches reaches ratches carroches crotches grouches marches parches preaches soroches tracheas troches
caroach caroch caroche carroch