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.
fought fight foveate
fought naught waught sought taught ought caught nought aught wrought bight naughty eight knight weighty righty right mighty light wright might night paughty fight hight righto tight eighty dight weight nighty ghat sight wight