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.
pseuds pseudos pastes pistes posties pesetas possets posadas pistous pesades pasties passados passades pests posts pasts passadoes piosities pussytoes pastas pastis pestos posits poussettes
pseuds cedes cedis seeds sudds suds sudsy suedes zeds physeds hayseeds pseudos recedes resedas reseeds secedes
pseud pseudo peseta posed upset