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.
kors koras kouros kris cors kirs gorsy keirs coirs kiers gorse gores kurus goers corse cores coarse kaross course kyries kersey cooers karoos kauris cowries kauries kerries karroos corries kerrias gars cris crus curs cars greys currs crass grass grows cross gross crews gurus grues cares cures curse cries cruse grays guars craws gaurs crows carse grees carrs cress
boors cors kors moors mors ors doors dors tors