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.
vodouns voudouns voduns voudons voidness photons voidance futons fadeins phytons
vodouns voudouns dons duns codons udons hoedowns radons voudons lowdowns voduns godowns donsy beduins downs donas guidons bedouins odeons adonis redons dunes showdowns