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.
song sung snug sing sang snag snog suing sanga sonic snaggy senega seeing sank zing sync sunk sink zonk snack snake snaky sneak sneck snick snook snuck
bong hong gong long pong wrong song dong tong