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.
gazette casette cassette gazed caseate gaseity gast caste guest gassed gusset coesite gooiest guessed
mozette gazette mozzette settee fossette casette cassette mozetta mozzetta musette noisette poussette rosette