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.
sawneys sanes sanies sans sines sones sains snaws scenes seance seines sansei saunas sinews sneezy sonnies sanious suns sins sons sinus snows sunns zines sense since cines zones sinhs sonsy sennas sunnas sensei snoozy snazzy snooze scions sneeze scenas sonsie science senecio siennas sinuous sunnahs
sawneys tawneys sheeneys wanes townees tawnies rawness pawnees nowness newness lowness moneys looneys gooneys coneys honeys phoneys fewness townies wines shinneys