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.
carrot carroty cart garrote carat caret carte garrotte carate garote cardio croute garret corrody cowrote garotte corrode carried curt kart crit grot card crowd court cruet curet crate credo cared caird quart griot groat karat grout curred quarte cardia grotty karate caried grouty create crowdy curate corody grotto garred curite quarto cardiae corrade corrida cowrite crowdie curette curried quarried
carrot parrot pierrot rot roto roti rote rota root riot barret groat garrote garote carroty terret torot trout worrit cheroot droit wrote forrit rout grot lirot ferret grout parroty heriot cowrote griot rewrote tarot garret territ trot turret chariot sheroot
carr carry car care corrie curr currie curry karroo acari scar scare scarey scarry scary