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.
poteen potteen paten patten poutine patin piton puton hypotonia patina patine patinae petunia
teen ratteen poteen lateen sateen potteen ten tauten latten eaten bitten lutein gotten steno kitten catena sitten heighten oaten patten neaten ketene chutnee butene whiten batten mitten dudeen ratten written teeny paten laten stein fatten wheaten rotten quieten litten boughten retene beaten neoteny shotten
pot pate poet pooed potto potty pout pouty spot spotty