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.
true tree tare tire trey tyre tore tarre terrae tar tor try tory tiro trow tear dree tray toro drew troy taro torr dure tora dire tahr tour trio tier tori dare dere dore tyro tarry teary terai terra terry torah torii