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.
byrl birl burl brill beryl burly birle boral brail broil brawl brillo burley barrel burial barley boreal barlow barilla braille brawlie burghal borrelia