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.
seclude scalade scald scold scalado squealed skald cycled scaled skulled cycloid squalid scowled skoaled skilled sickled sculled suckled
seclude clade cloud clued collude quaalude becloud nuclide