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.
carroty carrot cart garrote corrody carte garrotte carat caret grouty grotty cardio croute carate crowdy garote corody garret corrode carried garotte cowrote kart grot curt card crit caird groat grody karat crate grout cared quart cruet curet crowd credo court curdy griot quarte gritty curite grotto caried cruddy garred cardia curate create karate curred quarto cardiae corrade corrida cowrite crowdie curette curried
parroty carroty rooty ferrety carrot corrody garrote grotty grouty parrot pierrot trouty rot