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.
trow troy tiro tyro trio toro taro try tor tar drew tore true tear tyre tory trey draw tahr tour tire tora tree tori tare torr tray duro tier hydro terai tarre tarry torah torii terra terry dowry teary
row vrow trow serow narrow morrow marrow grow crow harrow furrow arrow frow farrow burrow brow borrow barrow prow sorrow yarrow