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.
swung swing swang sawing sewing sowing swank swink swanky
swung awing gnawing bowing bowwowing meowing vowing hawing viewing dawing tewing swing dowing twang sowing chawing sawing chowing powwowing shewing owing yawing miaowing wing jawing swang mowing lowing lawing mawing cawing jowing cowing hewing tawing dewing jewing towing sewing wowing rowing chewing pawing shawing knowing showing mewing yowing
swan swanny swine swinney swoun