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.
sonnies sones sonsie sanies sons sonsy zones sanes sines sunns hysons seines sunnas sennas zanies sinews scenes scions siennas zinnias sanious sawneys sunnahs sins sans suns sains cines cions sense snaws zoons zines sinus since snows sinhs sensa sneeze saunas sansei seance xenias scenas sensei sneezy snooze science sinuous
bunnies minnies shannies johnnies gunnies ninnies tennies funnies nannies shinnies fannies sonnies pinnies whinnies tunnies hinnies jennies bennies pennies bennis phonies nenes nines keenness ennuis zinnias zanies beanies peonies tennis loonies leanness nones sanies townies pennis monies vainness lunies shinneys jinnis meanness toonies wienies meinies boonies heinies joannes pannes genies meanies bonnes goonies tonnes donnees conies ponies dunness denies weenies nonnews wanness sheenies bennes tawnies