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.
hatteria hatter hater hotter hitter heater hauteur hetaera hetaerae haughtier hooter header hetero headier hetaira hootier hetairai heder hider heeder
hatteria hysteria tuatera terai terra yttria atria batterie hetaera latria coterie niterie nutria stria striae tetra tetri uteri