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.
outadd outdo outed outate outeat ootid oddity oidioid
outadd tad woaded stead stade daddy toad beaded faded haded headed jaded hodaddy gadid goaded laded leaded loaded kneaded staid waded shaded