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.
grannies crannies guaranies grans guaranis grayness greenies grains cranes groans greenness cronies groynes carnies gurneys guaranas greyness goriness grins crones greens kernes groins cornice garrons carneys currans guernsey corneous queerness curns kerns carns corns karns kirns cairns cornus croons crowns 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
granny grannie gran cranny grain grainy grana groan