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.
phytons phytins photons phaetons phytanes futons photoionize voduns fatness fattens fitness vodouns voudons
phytons rhytons cytons tons duotones setons rattons betons boutons nitons muttons moutons cottons jetons phytins photons phaetons futons atones putons newtons batons toons tonus tones jettons ketones mutons buttons pitons ratoons rattoons towns stones chitons