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.
runouts runts rainouts rants rents reunites ruinates rounds rondos rentes rennets reendows rands rends rinds rynds ranids randies
knouts snouts rainouts runouts nuts peanuts doughnuts minuets denotes nowts snots keynotes cenotes knots pinots founts nodus connotes counts minutes snoots nutsy mounts donuts notes tenutos