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.
cotta cottae cot coteau cote couteau coot coda coat cutty quota catty coati gutta cootie codeia cattie coatee guttae got cat cad cod cut kata goat cadi code coed caid goad gout cute cade koto cate
cotta betta rotte potty pitta nota motto lytta lotte mott biota bota bott vitta vittae shittah dotty iota jota lotah rota potto otto knotty motte lotto lyttae jotty lota quota guttae gutta cottae chott sutta shott