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.
weakons weakens weakness wagons wakens waggons wigans
weakons leukons weakens wagons deacons daikons rockoons reckons racons macons kaons koans eikons eikones beckons beacons bacons agons takins wakens ikons