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.
frotteur fritter fretter frettier frater fruiter ferreter fruitier fioratura fioritura fioriture fioraturae feretory forrader
frotteur fretter prettier grittier gritter garotter crittur critter fritter frettier brattier ratter ruttier rotter ritter reutter rattier grottier trotter