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.
grout grouty grot groat griot garote grotty croute grotto grat grit garrote garotte garrotte grody gourd great greet cruet court kraut grate gourde garret carrot gritty cowrote carroty cart crit crud curt grad grid kart
grout rout trout rut rot cowrote rota riot carrot court croute garote rote route roti bruit grouty proud reroute droit torot griot chariot sheroot parroty heriot root parrot groat brut cruet brute garrote fruit wrote roto lirot grot kraut carroty pierrot pruta rewrote tarot trot trouty cheroot shroud