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.
buhr bur bury bura burr burry burgh burro brugh bureau burrow brr bar bra bro bourree bore brae broo bare biro bear beer bray brie bier bree brio boar birr boor braw brrr brow bora brew byre barre beery berry