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.
grantee guarantee granite grandee grant groaned granita grained guaranty craniate grand courante grunt gurnet craned garnet grenade currant coranto kernite courant greened groined crinite cornute grinned crenate carinate coronate crannied couranto grind carnet ground kerned cornet corned kirned crooned crowned crownet crunode current cairned cornuto coronet
grantee guarantee warrantee courante grandee granite uranite
gran grain grainy grana grannie granny groan