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.
krauts korats karats kraits karates karts keratose groats crates carats cruets grates gradus grouts kurtas gratis greats creates curates croutes carates keiretsu grits crits grots grads cruds carts carets griots curtsy greets courts cartes crudes grades quirts curets quarts caritas curites quartos curtsey curtesy garotes grottos carrots quartes garrets cardias corrades corridas courtesy cowrites curettes garottes garrotes grottoes queridas
krauts jurats ferrates drats narrates courts boarts brats hurts brutes harts arts gradus groats rates frauds erratas karts cruets phorates gratis borates charts urates tarts derates laureates bruts marts treats quarts darts kraits bruits prates carats reroutes creates seriates karates parts pirates greats karats korats farts fruits ruts grouts grates ratos rats carates gyrates riatas routs crates orates hydrates frats curates hearts variates lariats serrates croutes cerates carts prats reatas berates deaerates trouts routes muriates aerates marauds derats traits warts yurts
kraut karat karate korat krait