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.
degrees decrees degrease dekares digress decries decares decrease decuries doggeries decors dikers daggers diggers duckers dackers dickers dockers doggers duikers tigress daikers deckers daycares decorous toggeries takers tokers tackers taggers tickers tuckers tuggers
agrees pugrees degrees grees puggrees pugarees chickarees aggress digress gores decrees greys cicorees grues eagres puggarees ligures puggries figures regress egress screes ogress ogres tigress creese shikarees