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.
crannies grannies cranes cronies carnies crones guaranies cornice carneys currans grayness corneous guaranis greenies carns grans corns curns greenness cairns groans cornus grains kernes croons crowns groynes coronas gurneys carinas corneas careens goriness guaranas carrions greyness queerness grins karns kerns kirns greens groins kroons querns
grannies crannies tyrannies trannies burnies tyrannize brionies brinies lornness greenness baronies baronnes barrenness brownies cronies ironies ironness carnies brownness guaranies greenies tyrannise byrnies wornness
cranny crane crania grannie granny