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.
twier tawer tower dewier towery dower dowery teaware
viewier twier chewier showier cowier dewier newer mower gnawer were weir weer bower wear rewire ewer pawer rewear power lowery wire wiry dowery tower shewer showery chewer sewer whir chawer rawer wair viewer sweer sower sawer towery tawer knower rower fewer lower hewer bowery cower haywire vower swear shower dower
tawie towie twae twee etwee tideway