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.
dawk dak dag deke take dick deck duke dago dyke tack dock duck taka dike teak dagga decay dekko dicky dikey ducky dykey tacky