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.
abroad aboard abrade aubrieta abort
byroad abroad broad labroid shewbread keyboard teaboard gabbroid sowbread fibroid rubboard beebread leeboard aboard abrade brood bread braid brad board reboard seaboard zebroid tuberoid showbread