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.
top topo topi tope topoi topee tip tup tap toupee typp tipi tapa tape dope dopy dopa tepa type typo typy tepee tepoy tippy dopey taupe typey tawpie teapoy teepee