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.
effete eft evite
effete fete fet mofette tuffet cuvette defeat giftee refute haffet navette foveate moffette fouette buffet feta feet feed feat fate naivete refeed safety taffeta whiffet