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.
vanities vaunts finites fantasie vents viands faints vandas vendues fantasy vendees phantasy phenates phonates vendeuse vanadous fonts vends hyphenates feints fiends founts
annuities tenuities sanities vanities lenities unities canities nineties gunites unites coonties dunnites aunties nites dainties pinites bounties punties kainites banties chanties sanitize unties intis unitize lenites finites sienites mannites sanitise quintes counties dunites pointes bonitoes panties reunites gahnites shanties
vanity vaunt vauntie vaunty vawntie avant