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.
risus rises reissues raises reseaus rases ruses rices roses resays recess reuses rooses rouses resows resaws resees resews wrasses reassess rousseaus
nisus risus vises hoises issues casus guises liaises visas mises luscious sissy paisas peises vicious sises diecious disuse wises missus cissy poises passus suss sues sous lusus misos misuse bises noises pisos raises rises byssus reissues seises daises dioecious tissues chaises
rais briss prissy prise kris crissa cris iris frisee frise bris raise arise rise rias reissue reis priss sris