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.
callans clans cleans collins kalians cleanse gallons callowness galleons glans galloons colleens clons cullions galleins cleanness gleans clowns clines colons colins clonus clones colones colonus galenas kaolins colonies colonise coolness kaolines glens kilns glance gluons
callans lallans llanos leans lawns clans collins glans loans alans kalians mullens planes pollens silanes solans tolanes uhlans woollens gleans lanes gallons ballons blains bouillons elains elans flanes flans billons cleans villains plains plans reloans solanos xylans tolans ulans yulans