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.
shiatsu shiatzu shits shoats shads chits shuts shittahs chats shots shotts shades shutes cheats shotes sheets shouts shoots shadows chateaus chitties shoddies sheds chides chotts
shiatsu fiats hiatus riatas shiatzu its
shat shit shittah shitty shoat