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.
dura doura durra dourah duro dour dray draw durr dure hydra deray hydrae hydria durrie dor dry hydriae dorr doer deer tour dore tora dear dare dree drew doughier dire tray door dory dere dowry terra deair diary derry deary dairy torah terai hydro
aura bura jura laura mura sura doura dura