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.
snoots snots snouts snoods snits santos synods saints suints scents sennits sonatas sennets cenotes sonnets senates sanities sienites sinuates sanitise sneds sands sends cents scends sondes sounds sundaes sundews sanitize
snoots connotes denotes snots snoods cenotes runouts rainouts pinots keynotes gentoos knots fonts bionts nowts notes knouts snouts wonts
snood snoot snooty snot snotty snout snouty synod