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.
dewiness dwines dewans twines deewans tweeness twins diwans twains tweenies twoonies tweens
dewiness chewiness showiness waeness wanness whines wines winoes woeness awayness lauwines lawines dwines tweeness twines