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.
bedunce beduins bedouins beadiness butenes betaines betonies betons battens boudins boutons buttons
dunce bedunce dance dunes voidance cadence guidance riddance