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.
gobbles gabbles cobbles cobles gables kibbles quibbles gabelles cables cowbells kabbalas cabbalas cabbalahs kabbalahs cabals kiblas cabalas kabalas keblahs kiblahs qabalas
babbles bubbles rabbles pebbles gabbles gobbles kibbles hobbles nubbles dabbles wabbles nibbles nobbles cobbles quibbles dibbles rubbles bobbles wobbles bless biles fables baubles bibles lobules robles ables bubales gables tables bubblies cobles nobles cables bales oboles foibles tubules jubiles roubles blues abeles mobiles ribless boles bibless jobless rubles doubles webless sables wobblies