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.
coude code cud cod cuddie codeia cade cued cute coed couteau cote coda gude cutey guide cutie cooed cuddy coatee cottae cooeed cootie coteau goodie caddie cot cad cut god good quid cadi kudu caid gowd gout cate coot guid goad kudo coat quad gaud quod
coude ode oud loud dude nudie suede node route mode rode hoodie miaoued odea nude meoued geode lude lode foodie gude bode goodie code guide rodeo rude diode woodie