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.
collins colins cullions colleens colons clines colones colonus kaolins callans colonise kaolines clons clans galleins colonies coolness clones clonus clowns cleans callowness gallons cleanse kalians galleons colonize galloons guylines gluiness cleanness glans glens kilns gleans gluons galenas
collins lins clines loins colins callans jawlines violins lions felines villains elains bullions bouillons lines linns gallons cullions kalians kaolins malines millions mulleins mullions paulins plains relines salines zillions towlines cholines hyalins linos aliens jillions liens alines ballons beelines billions billons blains aloins blinis bowlines bylines eloins valines villeins hellions galleins guylines kaolines lallans millines moulins mullens oleins pillions pollens salinas solions talions woollens hyalines yeelins