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.
hewer
ewer shewer fewer hewer chewer newer sewer viewer lower sewar cowier pawer swear rawer bower lowery chewier were dewar rower viewier knower twier dower showery weir shower sweer vower mower wear bowery dowery sawer sower tawer dewier gnawer cower rewear weer chawer tower towery power showier