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.
corny corn crony cornu carny cairny cornua koruny corona cranny carney cornea coronae curn coreign carn croon cairn crown crane crone korun careen koruna crania greeny grainy granny carina gurney curran carnie carinae carrion gran grin karn kern kirn
horny corny porny sharny loran korun sorn moron irony porno mourn tourney shorn crony journey corn browny cornu carny cairny morn horn lorn briony barony ferny koruny gurney briny barny bourn boron born barney carney porn borne torn worn shoran yourn
cor coir core coria corrie cory cowrie cowry score scoria scoriae