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.
halo hallo halloa halloo hallow hall hail hale haul helo heal haole hillo hullo hello hollo helio hilloa hulloa holloo holloa hallah hulloo hollow hull hell hole heil hili howl holy hila hula hill heel hilly holey holla holly hooly hoyle