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.
cruets carets crudes curets croutes creates creds crits cruds carts curettes courts greats cartes greets credos grouts crates curtsy carats krauts creeds curtesy carates caritas carrots curates curites curtsey garrets corrodes keiretsu courtesy corodies crowdies cowrites corrades cards grots grits cords curds karts corrodies courteous griots kurtas kraits cairds karats grates groats gratis korats greeds grades quirts crowds quarts gradus grides grottos garotes gourdes karates cardias quartes quartos corridas garottes garrotes grottoes queridas
cruets bruts garrets routes carets croutes verts fruits virtues ferrets frets burets reroutes perdues treats nerts trouts keiretsu cherts greets brutes rets aretes grouts greats curets courts crudes routs ruts hurts bruits barrets berets terrets prudes trets parietes turrets krauts yurts
cruet cried ocreate curette curet cured crude cruddy crud croute creed cared credo cred create cored caret acred screed