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.
create crate curate carate curette cruet grate caret carte curet creed carat great karate croute curite cowrite cowrote cart grat cred crit curt greed korat cured cared kraut cried karat credo krait court crude cored groat greet garret caried garote carrot greedy cardia curred quarte cardiae curried corrade crowdie garotte carried garrote corrida carroty corrode garrotte
aureate create laureate rete irate rate reata carate muriate gyrate carte ariette crate karate heart arete orate pirate prate cerate seriate syrette derat hydrate treat urate retie barrette curate lyrate terete serrate deaerate proette cirrate peart pirouette borate aurate narrate derate grate treaty berate quarte great hereat curette variate phorate ferrate aerate burette whereat
care core craw crew cure acre ocrea ocreae recarry wreaker scree screw screwy