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.
odeons oddness
odeons donsy duotones ketones coetaneous jetons setons tonus cutaneous denes rattoons quietens hoedowns atones poteens donas towns boutons muttons codens lateens dons dens dienes phaetons lattens fattens hoydens catenas stones chitons udons deadens steins saddens redons rattens putons pattens newtons moutons whitens buttons battens rhytons ratoons idoneous middens dense lodens phytons lowdowns heightens maddens voudons guidons tauons pitons latens futons tens tones teens ladens codeins mutons betons toons teensy adonis hoidens hoddens kittens rattons downs cottons tons sateens deans codons ketenes dudeens fadeins jettons godowns batons vodouns luteins voudouns loudens photons leadens tense maidens nitons radons retenes butenes stenos wheatens mittens neatens patens potteens ratteens reddens cytons soddens suddens tautens widens showdowns