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.
curacoa curacao crack croak croaky carack cracky carrack crag croc cargo crake cruck crock crook creak crick craggy creaky carioca crickey karaoke
curacoa curacao maraca touraco turaco turacou