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.
court curt curet curite croute curate cord cart crit cowrote cowrite curette curd gourd cured korat crate quart carat cruet grout curdy caret quirt carte cored kurta curred carate quarto create quarte carrot corody grouty gourde corrode corrody curried carroty corrida corrade card cred crud grat grit grot kart
court ort croute curet curt grout korat quart jurat mort port quirt reroute sorta torot torta trout whort short yurt forty forte hurt fort rout buret borty bort boart aorta kurta route grouty gourd purty sort dorty tort torte trouty wort shorty yurta
cur cor scour scoria cougar curry coir core coria corrie cory cowrie cowry cure curia curiae curie curio curr currie kouroi score scoriae scurry