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.
couteau coteau cute cote coude cutie cotta cutey codeia cootie cottae coatee gateau cut cot coed gout cate coda coat cued coot code gutta quota gouty quate cutty coati quite cooed quote cattie cooeed cuddie goatee guttae queued
couteau bateau batteau coteau gateau lutea chateau tau tea uta ute