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.
cleanse cleans clans gleans cleanness callans clons glens colonise glans colleens clowns colins colons clines clones glance clonus galenas kalians collins colonus colones cullions colonies galleons galleins coolness glueyness kilns callowness gluons gallons kaolins
cleanse lanose leans lense bluenose elans flense cleans gleans