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.
bassets bassetts basts beasts besets boasts bests busts bastes besots boosts beasties besides bestows
assets knessets cossets tassets bassets russets possets missets gussets sets besets resets bassetts miseats misseats suets setts pesetas seats keysets reseats rosets disseats cosets tsetse
basset bassett based baste biased biassed bossed bussed abased