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.
pressor presser pressure preassure prissier pricer parser prizer proser purser peruser piercer praiser pricier prisere prosier pursier pursuer
pressor caresser presser dresser tressour
press pares peres pores prees presa prese preys pries priss prissy pross prossie pyres apres