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.
grouty grout grotty grot groat griot grody garote grotto croute gritty garotte carroty garrote grit grat garrotte court gourd grate greet cruet great kraut crowdy garret gourde carrot greedy corody cruddy corrody cowrote
grouty trouty court route rutty borty forty rooty fruity rout carroty grotty grout parroty purty reroute trout croute dorty shorty