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.
anise anis ansae ains anas anes ansa anus awns annas anoas annoys
anise ionise lionise bennies jinnis manse fannies munis genies loonies boonies peonies ponies cense minnies tense pennis tunnies denies bunnies tawnies sensei penis zanies genoise ninnies funnies shinnies shannies unsew toonies tennies donsie danios sonsie sansei rennase ennuis ensue beanies whinnies meinies manias venose mense guanase kinase lanose lense ansae nice conies nisi anis lanais ranis genius jennies noise finis nonuse phonies nisei pennies hanse lionize lenis minis gunnies johnnies goonies rinse linsey nose nannies ionize hinnies heinies pinnies mensae sense pensee xenias mannose deionize zinnias bennis dense monies tenias sonnies meanies lunies tenuis townies sanies unais weenies taenias wienies sheenies tennis yonis