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.
coontie conte connate connote count coned conto coined conned conoid county cnidae conidia coigned cuneate cant cunt condo cnida kente canty canid caned canto gowned gunite canned canoed cannot quinte gahnite gonidia kainite keynote quinate quoined
coontie conte tentie phonate phonied vauntie vawntie honied auntie monte monied neonate pantie pointe ponied zonate donate untie