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.
camels camelias camellias camails cumulus gambles gambols kamalas kummels cumulous gumless gumballs gumboils
mels pummels gimels pommels camels kummels meals umbels mells dumbbells hammals samiels gimmals mewls mammals pumelos mils pummelos mols cymols amyls smells pomelos tamals hamals chimlas
camel camelia camellia camail cambial comely gamely