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.
shawing chawing shewing showing chewing chowing chewink
awing cawing lawing dawing jawing hawing pawing yawing shawing gnawing mawing chawing tawing sawing wing swing rowing chowing jowing lowing knowing shewing towing bowing viewing dewing meowing sewing mewing dowing cowing owing hewing showing jewing sowing wowing miaowing vowing tewing powwowing mowing bowwowing aweing chewing yowing