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.
cut cute cutty cutie cutey cot gut cud cat couteau gout cote quit cued coat coot cate quate quota coude quiet gutty gouty cotta gutta quite coati catty quoit cuddy quote cattie coatee cootie coteau cottae cuddie guttae