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.
don dona done down donna downy donee donne din dan den dun donnee ton deni dawn town dyne toon dine tone dean dino tony deny dene dune danio deign tauon diene toney tonne towny dinghy duenna toonie townee townie