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.
has haes hahs haws hays hawse haughs hos hes his hehs hues hews hows hazy haze hoes hiss hoys hose hies hissy hoise hosey house hussy huzza heughs hooeys huzzah