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.
kidneys guidons kittens ketenes ketones goodness codeines guidance goutiness gaudiness quietness cattiness codens codons cutins cadence cadency codeins godowns
kidneys denes witneys sadness dines dunes dynes tawneys badness voidness iodines jitneys goodness lewdness loudness madness oddness redness deadness chutneys