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.
wily willy wail wile will waly willowy welly wooly wally while wholly waylay willie willow woolly wawl weel wall wale waul wool well weal walla whale wheal wheel whole
gaily lily noily oily pily roily daily doily wily shily