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.
knaur knar knur knarry gnar nary near gnarr naira nairu narrow nor noir nori
knaur aura giaour gaur kauri kaury laura gnar gnarr knar knur nary near saury waur