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.
cycloid cycled sicklied scald scold scaled skylit scalade scalado scowled sculled seclude sickled squalid suckled
cycloid clod cloud colloid keloid becloud liguloid nucleoid nuclide