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.
faro far fro farrow fear frow fair froe fiar fare faery feuar fairy furrow faerie for fir fry fur var fer pharaoh furrowy vair vary free fere fore four fray vara fury fora frae fire vrow feria ferry fiery firry foray furry varia vireo vrouw