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.
gadoid gadid gadded goaded caddied gated gaited godded guided goateed quadded quoited
gadoid did toadied dadoed readied oidioid mediad gadid caddied giddied iodide iodid howdied phytoid eddied buddied bodied doit dodo died didy mattoid muddied ootid redid tidied waddied
gad gaddi gadi gaed gaud gaudy goad egad