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.
cautery cattery cuter cater cutter couter coater cattier gaudery guttery gater cuatro gutter quoter gaiter cotter cooter goutier guttier quieter catarrh coterie gaudier cottier couture quitter cadre coder kiter gator codder cottar gadder goiter guider quatre quittor
cautery rudery littery lottery hauteur teary nutter mutter quoter poutier pouter butter gutter suiter bootery tottery battery uteri auteur watery terry shouter gaudery reutter neuter pottery goutier eatery mattery guttery buttery outer nitery muter putter router souter jittery tauter cattery touter couter utter cuter chattery cutter shutter try
cate cute coatee couteau cutey cutie acute scute cat cut