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.
bourdon burden burton bradoon bridoon baryton broaden baritone barytone
bourdon radon redon burden burton fordone cardon cardoon cordon guerdon gueridon lardon lardoon lurdan pardon teardown
burd board bored boride bourride burdie