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.
crowdies corodies crowds corrodies cowrites corrodes crudes curites cardias croutes corrades cards cruds creds cords curds crits curets cairds credos cartes carets grades crates cruets grides creeds caritas curates garotes creates curtesy gourdes carates carrots corridas garrotes grottoes courtesy curettes garottes courteous garrottes grads carts grids grits grots guards carats courts gradus grates gratis greats greeds curtsy griots groats gourds grouts greets kraits
rowdies crowdies shrewdies readies roadies birdies burdies hardies hurdies corodies corrodies parodies priedieus tardies weirdies
crowd crowdie crowdy corody scrod