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.
snouts snots snoots snits sinuates santos sounds synods scents snoods saints suints sennits sennets senates cenotes sonatas sonnets sanitise sanities sienites cents sands sends sneds scends sondes zounds sundaes sundews sanitize
knouts rainouts runouts snouts knots dunts nodus daunts connotes mounts peanuts minutes manitous punts chaunts tenutos keynotes jaunts counts nowts pinots haunts cenotes snots notes donuts nodous minuets taunts snoots denotes runts bounteous nuts bionts nutsy vaunts doughnuts wonts aunts lunts cunts vanadous founts fonts bunts hunts shunts
snout snouty sinuate snood snoot snooty snot snotty sound synod