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.
kurtas karts courts kraits quarts quirts krauts karats korats curets curtsy curtesy curtsey karates caritas curates curites quartes quartos keratose courtesy queridas curettes grots curds grads carts grits crits courteous griots grades grates carats groats guards grouts carets gratis cartes cruets gourds greets crates quartz greats grottos gourdes garrets creates croutes carates cardias garotes carrots corrades corridas cowrites garottes garrotes grottoes
aortas tortas kurtas borts pierrots hurts veritas arts birrettas grots boarts ruts erratas jurats forts curtsy worts carrots carets tortes berrettas carts rots brats vertus farts harts turrets shorts sorts whorts trets berets quirts territs tarts crits drats derats nerts cherts rads purdas bruts prats airts parrots karts merits writs ariettas barrets quartos grads artsy karats garrets burets terrets frits grits hearts carats ferrets berettas quarts verts girts quartes fortes orts raitas virtus riatas fortis farads korats frats rets brits curets brads marts reatas courts tarots ports birettas parts cartes morts certes caritas dirts rotas frets barytas torts trots proteas warts worrits darts charts shirts rats yurts