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