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.
catena catenae codeina coden cotan cutin codein cotton gotten ketene kitten codeine cottony quieten
catena ten tuna tenia teen taenia duenna catenae batten gotten kitten lateen litten latina neoteny paten patten potteen ratten retina written sitten steno tauten whiten mitten beaten bitten neaten butene eaten etna fatten heighten codeina boughten ketene quieten laten lutein latten oaten patina poteen ratteen retene rotten sateen stein duodena wheaten shotten
cate cat scatt caked cacti gateau gate cutey cute coteau cote coati coatee coat catty cattie cade scat scatty