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.
vapored vapoured vaporetti vaporetto
pored vapored spored kippered chippered coppered diapered spired supered paupered coopered loppered lipread lippered leporid lappered pried capered preed poured pared papered peppered spared spoored vapoured repoured spread zippered tapered choppered