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