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.
kelpies kelps keleps clepes kalpas calliopes claps clips clops glops gulps galops calypso collops gallops
kelpies lapis lopes blypes elopes floppies jalopies jaloppies clepes slipes slopes slypes talipes