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.
hulky hulk holk hillocky halakah hillock hoelike
baulky bulky hulky sulky caulk chalky hulk talky silky bulk fluky plucky flukey kulak laky baulk lucky milky pulik sulk balky folky talcky flaky whelky alky yolky
haul hula hull hullo hulloa hulloo ahull