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.
coat coati cot cat coatee goat cote coot cate coda catty cotta coteau cattie cottae codeia goatee cootie cod kat qat gat got cut cad couteau code gate gout kata cute cadi goad coed koto cade caid gait cutie quota caddy cooed cutey gouty cutty coude kotow quate quoit quote
boat coat goat moat oat doat shoat at