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.
copouts coapts coopts capotes cowpats cupids
pouts copouts spouts pots puts reputes teapots bowpots depots poets potsy sapotas capotes putts sapotes spots repots deputes boughpots wipeouts