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.
tar taro tahr tear tare tarre tarry teary try tor dare trio tora tori troy tyro tour tire tore dear trey tree tory tyre tiro torr true tier tray trow toro terra diary dairy terry deair deary terai torii torah dearie terrae yttria