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.
colins collins colons clines kaolins colones colonus clans clons colonies cullions kaolines colleens coolness colonise clowns cleans clonus clones cleanse kalians callans gluiness guylines galleins colonize glans glens kilns cleanness callowness gleans gluons galenas gallons galleons galloons
lins paulins colins hyalins violins kaolins yeelins moulins collins jawlines woollens clons plans bowlines valines bylines flans jillions ballons elans blains loins callans cullions galleins pollens linos belons melons colons salines gallons relines uhlans tolans talions zillions solons solans ulnas villains lines billons pillions linns lens kalians lallans bullions felines hyalines mullens villeins clines lions malines elains clans beelines aloins liens bouillons alines hellions billions blinis mulleins plains glans glens kaolines oleins millines millions alans felons eloins kilns aliens guylines mullions oleines halons pylons nylons cholines salons solions xylans delaines talons towlines ulans woolens salinas yulans
colin cline colleen colon colone coloni colony