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.
sots soots sets sits sods sites stows sates stews suits sodas suets stoas satis situs sties setts seats stoss stays sautes setose suites satays suttas setous soddies settees suttees suds zits sades sadis saids seeds sides sudds sudsy
boots cots shoots tots dots soots roots pots oots knots mots moots lots loots coots bots jots hots hoots phots foots riots rots sots toots wots shots