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.
haes has hes haws hahs hays hues hoes haze hehs hies hews hawse haughs hooeys heughs his hos hiss hose hows hoys hazy heeze hissy hoise hosey house hussy huzza
haes gaes kaes maes waes as es