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.
chateaus chats cheats chutes chitties chads chits shotes chides shutes shoats chotts shades shiatsu chetahs shiatzu cheetahs chuddahs shads sheds shits shots shuts sheets shoots shotts shouts
chateaus gateaus taus teas tease toeas beauteous beauts luteous meatus piteous duteous tauts teats tas
chateau chat chaeta chaetae chatty cheat chute