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.
grin groin grain grainy gran grown green garni groan grana garron greeny gurney carina groyne granny guarana guarani carinae grannie greenie carrion carn corn kirn curn kern karn crone kroon cornu krona kerne croon korun cairn crown carny crony crane krone corny quern
rin brin burin grin mirin purin sarin serin