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.
tree tare tire tyre tore trey true dree tarre terrae tor tar try drew trow dire dure dere toro tory tori dare troy tora tray torr tear deer tier dore taro trio tour tiro tahr tyro tarry teary terai terra terry torah torii
ree bourree bree free hiree gree laree pree puree saree siree sirree soiree dree tree re