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.
bestow best beset beast besot beastie bast bust baste boast boost busty basset beside bowsed bassett
stow bestow staw stew stoa gusto pesto pistou cestoi xystoi