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.
daikons deacons dickens deaconess deigns takins tigons decanes diagnose doggones tackiness tokens toucans tycoons
ikons eikons daikons kaons koans beckons eikones icons leukons likens reckons rockoons tigons weakons