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.
coesite cosied cost caste coast coset costa cosset cuesta casita casette caseate gooiest cast cassette guest quest costae cozied keyset cassata gaseity gazette guessed gussied
resite coesite site testae suite beside vestee hessite geste mestee jesuit miscite recite reside resit zoisite testee sit