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.
abbot about abet abought abut aboiteau abate abode aboideau abed
abbot bot towboat sabot rubout robot boat boot bota bott bout about ebbet hobbit gibbet jabot gobbet rabbet rabbit reboot rowboat sabbat seaboot showboat