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.
cicely saucily sassily scissile
cicely doucely choicely nicely cel basely wisely hazelly weaselly ceil cell seely lacily juicily micell racily saucily icily loosely weasely mycele
sice bices fices vices ices piceous rices sices dices