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.
courteous courtesy courts croutes curtesy curites curates curettes cowrites cartes curets curtsy crates quartos carates gourdes creates quartes curtsey corodies corrades corrodes crits cords curds creds carts corrodies grouts korats crudes creeds carets gourds quarts carats kurtas quirts cruets grates grottos karates carrots garotes caritas garrotes corridas crowdies garottes grottoes garrottes cards cruds grits grots karts
courteous virtuous proteus pyritous tortuous
court croute curate curite scoured curt