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.
hat heat haet hate haut haute hit hut het hot had haughty hade head haed hoot heady hooty height heyday hottie houdah howdah
ghat phat hat what chat shat at