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.
tyro tiro trow troy taro toro trio tyre hydro try tor tar trey true tore tory tahr tier tour tray tear duro tora tori tree tire torr tare hydra tarry teary terai terra terry torah torii tarre