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