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.
crank cranky crannog crewneck caring coring curing curring
rank drank shrank crank frank prank brank trank franc shrink trunk parang wrang drunk prink cranky rink ourang prang drink tranq orang rang brink shrunk
crania crane cranny granny grana carn carney carnie carny corn cornea cornu crone crony curn gran cornua grannie corny scrawny