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.
caviares caviars covaries cavers coiffures covers kafirs kaffirs quavers coiffeurs kefirs
caviares fairies chivaries rivieres fares fiars fires varies vireos vires affaires aviaries vivaries caviars covaries livres ovaries refires chivarees shivarees