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.
sopites spites spits spaits spates sapotes spitz spots septs spats spades speeds spodes spouts sapotas sippets zapateos spuds speedos
spites sopites pits tiptoes spits pates pitas pities capotes lapides lipides opiates reputes sapotes spaits spates pipits deputes pupates wapitis