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.
spites sopites spits spaits spates sapotes spitz spots septs spats spades speeds spodes spouts sapotas sippets speedos zapateos spuds
sopites spites paddies poetess pits pities pitas pieties pipettes patties pupates potties zapateos deputes dipodies tiptoes sapotes puttees capotes lapides lipides opiates paupiettes pipits reputes pates spates putties spaits spits zaptiehs deputies tippytoes wapitis
spit spite sapid sept septa sopite spait spat spate spied spot spotty sputa espied