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.
fiat fat fit fate feat fatty fad vat fet fid foot fete vatu fado phat fido fade feet ghat vita feta faddy footy fytte ghaut vitae vitta