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.
burd burdie burred buried bird bred bard brad bourride brood broad bared bread bored beard barde buret board brede breed bride braid barred birred bready hybrid birdie byroad boride broody berried burette burrito bort brit brut brat beret boart borty britt bruit brute
burd curd gourd nurd surd turd urd
bur bura bureau burgh burr burro burrow burry bury