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.
neonate neoned noonday nonet ninety
phonate donate zonate neonate connate conte sonata senate pointe pennate enate hyphenate phenate innate quinate cuneate pinnate lanate lineate lunate manatee monte coontie binate sinuate ruinate tannate