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.
doughier dour doer doura durrie dourah dor dorr tier dore deer dure dire dear dura dory durr door dere tour dairy deair deary deray derry diary dowry durra dearie
dough doughy dought doughty boughed bought duh