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.
kotow kowtow koto keto koodoo got cot kat kit good kudo keet cote kite coot kata goat gout coat gowd kyte
kotow tow towy photo koto kowtow lotto motto otto potto roto stow