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.
sonsie sons sonnies sonsy sones sense sensei sanies sansei hysons scions suns sans sins sanes cions sains zones snaws since sunns sensa zoons snows sines cense seines sunnas sneeze scenas sneezy saunas scenes sinews sennas seance zanies snooze sanious sawneys science siennas sunnahs
sonsie donsie ionise boonies ponies phonies gunnies lanose goonies johnnies mense nice funnies genies heinies pennies ninnies peonies zanies lunies monies venose sheenies sanies wienies weenies bunnies tunnies toonies tennies denies sense ensue newsie sonnies rinse fannies linsey meinies ionize manse kinase hinnies conies jennies nannies minnies bennies dense mensae deionize meanies pinnies lionize loonies nonuse nisi pensee beanies guanase lense anise bonsai sensei mannose ansae lionise cense hanse tawnies rennase tense townies sansei unsew whinnies nose shannies shinnies