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.
garni guarani carnie garron gran carn karn grin guarana grannie greenie groin grana grain green carny cairn groan grown cairny carney crania careen grainy granny greeny groyne gurney carina krooni carinae carrion corn curn kern kirn
garni burnie yarn sharn warn tarn sarin reearn learn guarani crania bairn barn barny baron biriani rani earn karn sharny shairn urania darn saran pernio airn byrnie carny carnie carn cairn hernia varna yearn