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.
fairy fair firry faery fiery fry fir far fire vair faro fare fray vary fear fiar fury furry feuar ferry foray faerie farrow forwhy feirie gharry fer var fur fro furrowy for free very froe fora fere frae frow fore vara four vier
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