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.
cantic quantic cuneatic kenotic kinetic quintic gonadic gonidic
antic quantic quintic ontic cantic mantic lentic biontic deontic syndic fanatic kinetic dunitic lunatic mannitic genetic phonetic phenetic hypnotic cuneatic fundic noetic enatic kenotic zoonotic antick downtick venatic tonetic
cant canto canty candy caned canid canned cannot canoed conte conto cunt scandia scanned scant scanty