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.
phenol phenyl phonal phonily venal fennel veinal venial venule veinule venally venially
phenol enol cineole renal penal knoll noel noil nolo anole phenyl cannoli venal canola keenly queenly quinol lienal hymenal pinole cineol snool
phon phone phoney phono phony sphene