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.
koto kotow kowtow keto koodoo kit got kat cot kyte keet gout coot goat kite kata good coat cote kudo coati cooed cotta goody gouty kiddo kitty quoit quota quote