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.
bree brie bore bare byre brae beer brew bourree barre beery bureau bro brr bur bra bar brrr bury bura bier bear boor bora bray birr buhr brio brow braw boar broo burr biro berry brugh burgh burro burry
ree bourree bree free hiree gree laree pree puree saree siree sirree soiree dree tree re