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.
carates crates cartes carats curates creates karates carts karats carets grates caritas garotes curites cardias curtesy quartes croutes carrots crits garrotes courtesy curettes creds corrades cowrites garottes cards karts garrottes courteous groats cruets greats curets korats krauts grades crudes curtsy kraits courts quarts cairds gratis credos creeds quartos curtsey garrets keratose crowdies corodies grottoes corrodes grots grits curds cords grads cruds corrodies crowds greets grides griots grouts guards gradus greeds quartz quirts gourdes grottos
rates urates deaerates serrates phorates narrates carates cerates aerates berates crates ferrates borates curates gyrates hydrates prates orates pirates derates karates grates rats certes karats grades aretes irades fortes garotes variates curites forties laureates sorties gratis brutes courtesy cartes norites charades virtues cerites seriates curtesy yperites dirties treats kraits ferrites tortes groats traits barites writes pyrites sorites trades quartes rewrites creates rites verites frites frats krauts korats muriates rotes brats jurats lariats parades garrotes hearties carats parties cowrites corrades greats diorites prats drats ratos tirades treaties barytes derats erratas shorties
carat carate cart caret carte crate create curate karat karate ecarte scart