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.
avion avian affine avenue aphonia
avion avian devon savine ravine vein vina vine vino viny vain covin bovine levin mavin mayvin ovine pavin ravin savin devein divine