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.
trey try tare tray tire tyre troy tory true tree tore terry teary tarre tarry terrae dry tor tar toro trow dore dere dory tori taro dare dree dray tora trio tahr drew tear tiro tyro tier tour dure dire torr terai dowry diary dairy terra torii deray deary torah derry
grey murrey prey surrey trey re