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.
dairy deary diary deair dry dray dear dory dire dare deray derry teary dowry tarry dearie try dor tar doughier troy tray tiro tire tear taro durr duro dure dura dere drew door dree tahr tier tory deer draw dour doer dore tare trey dorr
fairy airy hairy dairy air fiery leary fair marry faery knarry deair parry aery hair nary nairu deary tarry wair weary wiry charry mair firry saury naira quarry lair zaire vary gharry kaury awry pair hoary carry miry harry vair diary teary wary whirry chair chary