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.
quinsy quins quoins quinoas queans quince queens guineas gainsay kins guns kains cains coins kinas gains kinos kines guans guanos kinase koines guanase guanays gunnies
quinsy ins mines linns kinas foins lins ions veins jinns rins joins vinos minus liens lions nosy noisy ruins vinas vines pins hins inns cions gainsay pinas sins wains shins chins unnoisy chines chains tansy wins wines sines whines mains rains scions sonsy tines peins donsy pains zins dinos minas zincy coins kinos finos minis cains kains pines kins quins rinse koines bins linsey quoins kines ains gins reins jins finis gains linos fines bines lines mincy cines pians fins pions zeins miens dines zines nines dins pansy teensy sinus sains loins sinhs weensy seines whins winos tains chaines chinas tins chinos shines unsay yins
quin quinoa guinea quoin equine quicken squinny