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.
dyneins doneness tannins downiness tenons
dyneins conins unions neons reunions renins pinenes munnions linins linens quinins quininas kinins guanins inions nenes venins venenes fanions bunions banians anions minions onions pinions rennins ronions tannins wanions