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.
twins twains twines dwines tweens dewiness tweeness tweenies twoonies dewans diwans deewans
wins rewins twins rawins wons whines twines dwines dewans swans sowens sewans rowens wains wans wens winos whins twains seawans jawans sowans gowans swains lauwines deewans lawines diwans rowans wines